Forum Rules and Etiquette

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This forum is part of our mission to promote the preservation of vintage computers through education and outreach. (In real life we also run events and have a museum.) We encourage you to join us, participate, share your knowledge, and enjoy.

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What are the top 10 rarest vintage computer bits you own?

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    I have a few rare Australian computers that are unknown in the US or UK, all from early to mid 80's

    Microbee Kit
    Applix 1616
    Excalibur 64
    Amust Executive 816


      don't know about 10 items
      but have CM-1803 big and heavy special soviet computer with 8" drives, and don't know anybody who have it

      And have another computer CM-1810 called "NIVKA" also one man have another working computer and few peoples have not working computers and parts
      This is soviet XT 8086 copmputer but have multibus architecture, not ISA here, and present 768 kb of ram
      Also supporting multiprocessors. Operating systems MS-DOS and iRMX86 soviet clones. my blog (Ukrainian)
      i like IBM,Compaq and SUN computers


        My collection is pretty mainstream PC, Tandy, Amiga, but I have a few items that are not everyday finds:

        - Cipher M990 9-track tape drive
        - TI Professional Portable
        - Sun Ultra Sparc 10 with matching accessories (including vintage Sun mouse pad)
        - Mouse Systems M2 optical mouse w/matching pad

        Call it "young vintage", but I recently acquired a first generation Alienware Chieftec Dragon tower with original Chieftec PSU and period-correct Pentium4+Radeon 9700. Working on replacing leaking caps on the PSU and a few bulging ones on the mobo while I'm at it. Will be loading up some period games like Commandos, Quake III, Thief 2, Half Life 2. May also load up some other games I never played at the time like Halo, Diablo II and Red Alert. Ah yes, the turn of the century games. Who cared about Y2K when you could just bury yourself in virtual mayhem and carnage!
        “The Bex religious impulse does have its collective side. As in, collect everything and hold on to it whether you remember where it came from or not.”
        —Alberto Fossa, Privateer 2


          How about a large stack of NOS Alphatop Green 753 (non-mmx Pentium 1 CPU) laptops still in their OEM boxes?
          Crazy old guy with a basement full of Pentium 1 laptops and parts


            Newest and rarest acquisition is an IBM 5162.
            Once upon a time, the internet sucked because it came through the phone. Now the phone sucks because it comes through the internet.


              Right now my collection is built around late 90s water cooling and gaming parts. Id say my rarest stuff I own is my cross drilled aluminum blocks from 97-2000. I know most dont see that as vintage, but its close. I have a block for SK7 and even slot one. Sadly the slot 1 block is toasted from galvanic corrosion.
              I have dyslexia, I have alot of trouble putting my thoughts into words and spelling/grammar is something I struggle with.
              You may need to read my posts twice to understand what I said.


                My rarest vintage stuff would probably be
                1. Presenter 1280 with cable and card installed in my R5000 Indy
                2. Beige G3 with a 500mhz MAXpowr G3-G3, and Sonnet ATA133 IDE card.


                  I guess I should add a few more items to my list: 1/2 dozen S-100 computers, a NEC Starlet laptop plus floppy drive module, Netronics RS-232 terminal board with keyboard, Quest Super Elf with S-100 expansion board plus 64K RAM board and lastly an Epson QX-16 that needs a CRT monitor.
                  Crazy old guy with a basement full of Pentium 1 laptops and parts


                    I kind of keep to the "pretty rare but generally known about" camp:

                    1) Apple II Rev-0 with toggle power-supply
                    2) Commodore PET 2001-8 with Blue Label in mint condition
                    3) IBM 5150 with IBM EGA card + daughterboard + IBM EGA monitor
                    4) a hand-wired COSMAC ELF 2000 with custom wood enclosure (one-of-a-kind!!! )
                    5) MSD Dual Floppy Drive with Disk Duplicator ROMs


                      Nice !!! Would love to see some pics, or a video, if you have one up on Youtube.

                      I have a few different videos posted here.


                        My collection is often rotating so I'm sure I've owned some rare items but this is what I currently have that can be considered rare:

                        1) Hyundai Super-16 Turbo (Intel 8088 clone) complete with Hyundai branded monitor and keyboard
                        2) Umax SuperMac C500 (Apple-approved clone)
                        3) Mitsubishi MP286L with bootable BIOS config floppy and manuals
                        Click here for my YouTube Channel on old commercials and abandoned places!


                          How about a Ritro Amicos 6800, brand new in original box?

                          Amicos 6800.jpg

                          A few more pics on a Dutch forum.

                          Regards, Roland
                          WTB: Case for Altair 8800 ...... Rolands Github projects


                            Compaq portable 286.
                            WANG VGA 8-bit ISA card


                              I have nothing very rare. Following items are nothing special
                              for their model or serial numbers either. I cannot put these in
                              correct order, but I'm curious about their production numbers.
                              VIC-20 was first computer that sold million units. C16 did not succeed
                              well, I guess it is more rare than the VIC. IBM pc/xt all models together
                              sold probably over 5 million units. C64 and it's variations are obviously
                              least rare based on their large production volume. Here's my list, can
                              you help to put it in correct order from rarest to the most common?

                              Amstrad cpc 464, with color monitor and several dozen casette games. Owned since late 80's.
                              Amstrad cpc 6128, with modified 3.5 pc floppy drive.
                              Commodore 16
                              Commodore plus/4 (untested, without power supply)
                              Commodore Vic-20 with several game modules
                              IBM XT 5160, 640kb/10Mb, green monitor
                              IBM ps2/model 30 0x86, without monitor, without original keyb/mouse
                              Amiga 500 with gotek emulator
                              Commodore color monitor
                              Commodore C64 + C64C

                              List of 10 is full, but bonus items: Commodore 1530, 1531, various 1541 + 1541-II drives and one
                              Oceanic drive.

                              AST 486dx33 or Osborne 486dx2/66 would probably drop out at least the C64's out of the
                              list. Parts built 386, pentium 1 or Compaq pentium II computers are maybe not worthy of the list.
                              Toshiba t1900c maybe rare, but as non functional don't belong to the list.

                              Missing, but not actively seeking out: 1551 drive, a Compis computer.


                                I have some hard to find items and one true unicorn...

                                1. AMI EVK 100 Prototype Evaluation Kit (Bare PCB)
                                1 1/2. IBM PC Jr w/IBM made 10MB hard drive expansion
                                2. SWTPC 6800
                                3. Xerox 820 kit (Bare PCB + ROM + all docs)
                                4. Fairchild F387SX SBC
                                5. Intel SDK-86 (+ a spare working one for trade bait)
                                6. Xerox 820 motherboard (Complete... w/Disks... need to build this one up)
                                7. Sym-1 (2 in box with documentation and matching serials to the boxes and one without a box - trade bait!)
                                8. Heathkit Z89
                                9. Heathkit Z110
                                10. Heathkit Z120

                                The EVK 100 is an interesting one. I looked for years to find info on it and found a museum in Stuttgart that had one, but they had no documentation. 1 1/2 years later I emailed someone who had a page up about the computer and he answered. He sent his documentation to a guy in England years ago, but gave me his email. I emailed the English guy and got copies of all the documentation. I gave the docs to the museum in Stuttgart and they used it to fire up their computer and dump all the ROMs. Now I have the PCB, ROM images, and documentation!

                                BUT... I have to find more MC6834 EPROMs. No small (or cheap) task.

                                The Xerox 820 kit has an interesting pedigree as I bought it off of Vince Briel.

                                The SWTPC 6800 was "free" - well, sweat equity. A friend of a friend died and he was a hoarder. My son and I were asked to help clean out the house in exchange for all the electronics we wanted - except for the main PC computer and any hard drives had to be wiped. We took 2 5x10 cargo trailer loads of electronics to Dallas Makerspace and gave it all away to members. The SWTPC and all the docs for it went home with me.

                                Edit: Almost forgot my Unicorn! My IBM PC Jr with an IBM made 10Mb hard drive expansion.
                                Last edited by channelmaniac; February 4, 2020, 06:37 PM.