Leaving the hobby sale, IBM Keyboards, Old custom keyboards with keycaps, Other miscellaneous items
User: Mumintrollenn
Confirmed trades: 2
Posted: 2026-09-13 17:41:23 (UTC)
Listing Type: Selling
Region: US
Subregion: MA
Description
TIMESTAMP
Made a decision to let go most of my current collection, added extra items from the storage that didn't get included in my original post.
Bundles preferred, all prices include shipping to CONUS
IBM 5251 Beamspring - 900 USD
Restored and equipped with a Compact Beamspring controller running QMK, Solenoid Driver and a brand new Solenoid from ModelFKeyboards. I've added some photos of the restoration process in the Imgur album linked above. Comes with the original controller, cable and solenoid
IBM 5253 Beamspring - 800 USD
This was very clean when I got it, from my view, it did not need a restoration. Built a TH converter for it but unfortunately, the QMK website dependencies has some issues with the firmware needed for this board. The converter and keyboard itself does function but I used the PCB off an IBM DisplayWriter to test it. Comes with the original controller and cable.
IBM Model F122 with rare and unique keycaps - 1200 USD
The nicest and rarest keyboard build in my collection, I've made an old post about how I acquired the keycaps. This has been previously restored, replaced the original switch plate foam which has already degraded.
I soldered on pandrew's custom PCB controller, that uses a Pro Micro running Soarer's firmware by xwhatsit. The original controller is still in working condition and was desoldered cleanly. I will include that with the purchase alongside the original cable. The original F122 keycaps and some of the special Model M keycaps will be included as well.
IBM Model M122 Type II - 200 USD
Fully bolt-modded M, this was also cleaned and resorted during the process. Keycaps featuring Arabic sub-legends. Built a converter using a Pro-Micro attached to the original controller board. Comes with the original cable.
IBM Model M122 Type IV - 100 USD
Parts only, this was assembled to be a fully bolt-modded M but ran into an issue with the membrane and the stain on the rubber mat. I had to cut out the mat so the spacebar key would function. Most if not all the traces on the capacitive membrane are corroded. A corner of the outer case is broken off. The original controller is confirmed working with another Model M. This needs a new set of membranes, but UNICOMP does not have it in stock (Part number 1394332). This includes all the buckling springs and keycaps. It is possible to try and order a membrane from a different Type IV board but I will leave that to it's future buyer.
IBM Model M Silver Badge - 200 USD
Fully bolt modded with a Model H PCB, this is programmed with VIA. Comes with the original controller board and cable
Reuters D3D-KB and D3-KP - 100 USD
This was bought as a hand-wiring project, but never had time to fully complete it. The main keyboard has heavy yellowing, will need retro-brite if you want to restore it completely. Some of the switches were de-soldered, but are clipped back on.
The keypad is in excellent condition, no yellowing. Both boards use Cherry Brown switches and Costar stabs. Keycaps are Cherry MX-mount but the legends seemed to be etched on the plastic and not double-shot.
Do note that the original controller boards are not included, this will not function on the original terminals without it.
Aegis 1800 Gray Built - 700 USD
Keyboard is in good condition, here is the build list below:
- PBTFans Dolch
- Gateron Ink Blacks V2
- Durock Stabs Smokey Black
This comes with a spare PCB that has been desoldered once. There are some tarnish spots on the brass plate, see photos.
Old Listing Details: I have a built AEBoards Aegis 1800 with a spare soldered pcb (tested, never soldered). It was lightly used. I couldn't get used to the layout. It is built and soldered with lubed (205g0) sakurios and pink c3 stabs (lubed 205g0).
TX 1800 V2 Blue - 450 USD
Blue case, brass plate and brushed stainless steel weight. Bought here at MM a long time ago and has been one of my most used keyboards.
The keycaps have a lot of shine. I've had this GMK set since it was released and was used on all my previous keyboards.
Previous owner reported that the RGB underglow does not work (none light up even after firmware resets and changing RGB settings). I have never tried getting it to work as I would leave them turned off anyway. All keys do register and function as they should.
The brass mid layer has a lot of surface oxidization and stains, I took close-up photos of this.
Comes with the TX carry bag and microfiber cloth.
Parts List:
- GMK Classic Blue Base
- Gateron Yellows
- GMK Screw in Stabs
RAMA U80-A - 450 USD
Yolk Yellow color, includes this keyset from PBTFans Tape and Radio. Drop Holy Panda switches but I don't know what version it is exactly, came with the sale when I got this keyboard.
There are scuffs inside the case and one of the PCB screw heads has been sheared off. Added photos of that on the Imgur link above. Comes with the original box.
Apple AEK I - 200 USD
Orange Alps switches in this very nice vintage Apple Keyboard, comes with the Wombat ADB to USB adapter.
Ergodox EZ - 200 USD
This is the OG Massdrop version, built with Gateron Yellows. Made a custom mini-USB cable and TRRS cable from ZapCables. Keycaps are MT3 Dasher Alphas and MT3 Susuwatari Ergodox Set
Discipad - 30 USD
This is a DIY Kit from Keebd, built with Gateron Yellows and using MT3 Dasher keycaps
Tentaku DIY Calculator - 10 USD, free if bundled
This was my office desk calculator, until I took the switches from it to complete another build, and stowed in storage. The acrylic switch plate has unfortunately snapped in multiple pieces, you can still solder and PCB-mount the switches though. This will come with generic numpad keycaps.
UniCusMech? AFSA Keyset “Monster” - 20 USD, free if bundled
A cheap keyset I got from Amazon a while back as I thought the colours looked cool. Even though it was described as SA Profile, it is closer to be AFSA profile instead, being about a millimeter shorter than SA. See the assembled photo on an 1800 board for reference.
Keycreative Blue Gray Blank Keycaps - 20 USD, free if bundled
I bought this way back on The Key Company’s website. This is still available on the Keycreative website but sold separately as a Main keyset and extensions kit.
Model H PCB - 40 USD
New and unused, bought as a spare and haven't needed to use it on a board just yet. Tested working on a Model M. Comes with the 3D-printed USB port bracket
Send a message if you have any questions , thanks