Texas Instruments SR-40 NO PLUG WITH CASE Calculator Rechargeable Model 1977

Vintage Texas Instruments SR-40 Calculator w/ Case & Manual - Untested

Texas Instruments SR-40 Calculator and Manual: For Parts or Repair

Vintage Texas Instruments SR-40 Calculator w/ Case & Manual Not Working

Texas Instruments SR-40 Calculator w Zipper Case & Owner's Manual, Works w 9Volt

Texas Instruments SR-40 Calculator with Leather Zipper Case - Works Vintage

Vintage Texas Instruments SR-40 Calculator w/ Leather Zipper Case & Manual

VTG 70s Texas Instruments SR-40 Calculator W Leather Zip Case, Manual No Charger