Old Tandy stock from the 1980s these are new and unused RS232 upgrade board kits for the Model III and 4 systems.

Comes with all cables needed and the external DB25M-to-DB25M RS232 serial cable to connect to your serial device.

The kit is for:

Model III: 26-1062, 1065, 1066

Model 4: 26-1067, 1068, 1069

NOT for: Model 4: 26-1068A or 1069A, or Tandy Model 4D 20-1070

Shipping in Australia will be $12.50 and internationally will be $34