IBM Beamspring Controllers/Converters , IBM 5253 , IBM Model M122 , Reuters D3D-KB and KP , Aegis 1800 , TX-1800 v2 , PBTFans Tape and Radio , PBTFans Dolch , Cherry MX Clear Switches , Gateron Switches , Drop DCX BOW
User: Mumintrollenn
Confirmed trades: 2
Posted: 2026-09-27 18:16:51 (UTC)
Listing Type: Selling
Region: US
Subregion: MA
Description
TIMESTAMP
Extra items from the storage that I'd like to get rid of ASAP. Getting rid of all the items I have listed below as I am leaving the hobby.
Bundles preferred, big discounts. All prices include shipping to CONUS
QMK Through-hole (TH) IBM Model F and Beamspring Converter - 80 USD
This is based on this Deskthority project by pandrew
With the nature of the 3 included plugboards, the female pin headers and Card Edge connectors have been left unsoldered for the buyer to complete. Alternatively, you can let me know what keyboard you'll need this for and I'll solder it.
I have a total of 5 available, one of which was assembled for a Displaywriter, but I will provide extra parts for this one so you can use it with other IBM keyboards. Each will come with a Solenoid driver and 6-pin cable connectors
Do note, this controller revision 0.1.1 does not natively support LED lock lights, which rev. 0.1.3 does.
QMK Compact Beamspring Controller - 70 USD
This other one is based on this Deskthority project by pandrew
Very similar to the TH Converter, albeit this only supports the "regular" beamsprings (excluding Displaywriters for example)
I have a total of 2 available. Each will come with a Solenoid driver and 6-pin cable connectors
Group photo of the 2 converters here
IBM 5253 Beamspring - 800 USD
This was very clean when I got it, it did not need a restoration. Built a TH converter for it but unfortunately, the QMK website is missing the firmware needed for this board.
Unfortunately, no off-the-shelf converters work for this keyboard as the PCB matrix is non-standard (5x23 vs. 12x8 on a 6580). The beamspring switches itself does function using the PCB off an IBM 6580 DisplayWriter to test.
This will need someone who has technical knowledge on how to re-design the open source xwhatsit files, in order for this to work with a modern computer.
Comes with the original controller and cable.
IBM Model M122 Type II - 100 USD
Fully bolt-modded M, this was also cleaned and restored 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.
Reuters D3D-KB and D3-KP - 50 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 - 600 USD
Keyboard chassis is in good condition, there are tarnish spots on the brass plate, see photos.
This comes with 2 PCBs that has been desoldered once.
TX 1800 V2 Blue - 500 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.
Previous owner reported that the RGB underglow does not work (none light up even after firmware resets and changing RGB settings). 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, see photos.
Comes with the TX carry bag and microfiber cloth.
PBTFans Tape and Radio Keycap Set - 80 USD
This is the Yellow Base, Numpad, and Spacebars Kit. Mounted once and placed back in the included tray.
PBTFans Dolch - 80 USD
This is the Base and Numpad kit, Mounted on a keyboard for a while, but the keys are in excellent condition, no shine or visible wear.
x216 Cherry MX Clear Tactile Switches - 60 USD
Never used or mounted, one pack was opened to inspect the switches.
These switches below have been desoldered once:
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x107 Gateron Yellow Switches - 15 USD
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x108 Gateron Ink Blacks v2 Switches - 20 USD
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x61 Outemu Silent Grey Tactile Switches - Free, just pay for shipping
DROP DCX BOW Keyset - 50 USD
This is the Base and Spacebars kit, these have been opened but never mounted.
UniCusMech? AFSA Keyset “Monster” - 10 USD
A cheap keyset I got from Amazon a while back. 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.
Send a message if you have any questions , thanks