2129026 is a model of Maxi-Switch 2900 Series reed keyboard. The example below has serial number 480-520 and PCB code 293146-03. The pictures were supplied by Radwell and represent the keyboard in Radwell listing 803861-001, with an eye-watering estimated value (according to Radwell’s listing in June 2022) of £1,881.71.
Radwell were unable to explain where the code “803861-001” comes from; that code does not appear to be from Maxi-Switch. Unfortunately this example cannot be dated, as the photos are too small, and Radwell ceased responding. Their product description reads:
- DISCONTINUED BY MANUFACTURER
- KEYBOARD ASCI-2