Cool find. Colex vintage pocket size electronic calculator. Model ESR 50. Great working condition, no led lights burnt out. Comes in original box, soft case, power cord, and a booklet. Takes 4 AA batt

 

DATAMATH CALCULATOR MUSEUM sells on eBay Texas Instruments TI Programmable 59 - CAL-Q-TAX Introduced together with the legendary TI-58 these calculators introduced a novelity, the Solid State Software

 

Here is a pair of used GEC Genelex Gold Lion KT88 tubes.The flashing is dark and the tubes have been run hard but still test good.. Please bid accordingly They test at 87/87 with a minimum value of 65

 

MULLARD GZ34 CV1377 BRAND NEW OLD STOCK MILITARY BRITISH VINTAGE VALVE REMOVED FROM ITS BOX TODAY FOR THE FIRST TIME FOR TESTING AND PHOTO MADE IN THE MULLARD BLACKBURN LANCASHIRE PLANT GREAT BRITAIN

 

SEMICON 1N2634 RECTIFIER TUBE REPLACEMENT NEW - NOS - EXCELLENT CONDITION OLD STYLE 4 PIN BASE SOLID STATE REPLACEMENT FOR THE FOLLOWING TUBE RECTIFIERS: 80, 82, 83, 83V, 5Z3 1600 VRMS, 600mA RATED 28

 

This was handed down to be from my father the lights and everything turn on. Will be shipped as is as seen in pic. Insurance will be included so bid with confidence. If item arrives damaged form shipp

 

Eight Xmas Reel To Reel Tapes / Free Shipping

 

Rare Technics SH-8066 12-band Stereo Graphic Equalizer w/spectrum analyzer & original auto-calibration microphone (RP-3800E). Microphone uses 1 aa battery. In very good condition, works flawlessly

 

SAE Scientific Audio Electronics, Inc. p.o. box 60271 terminal annex, Los Angeles, Ca 90060. This company went out of business in the 80s, which make these components collectables. They are in excelle

 

16 RCA 7586 NUVISTOR TUBES ALL HAVE STRONG TESTS FROM 80 TO 120 WHERE 68 IS THE MINIMUM All tubes test good with no shorts or leakage. Tested on a B&K 707 Dynamic mutual conductance tube tester. 1