The first Portable Calculator commercially produced. Available in 1970. Based on Texas Instruments chip developed at Cal Tech, Pasadena (Dr. Sheldon Cooper?) for more information: http://www.vintageca

 

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Stancor A-3883 Audio Tube Amplifier Output Transformer NOS Impedance: Primary 500 Ohms, Secondary: 15/8/6/4 Ohms, Maximum Audio Power 25 Watts. Tested coils for continuity.  See photos for details. T

 

You get all 20 large tubes in original boxes untested and sold as is. They appear to never have been used. I have no way to test these. See pics for markings and types. Check out my other items!

 

For auction is a NOS VINTAGE RCA 815 / VT287 TWIN OUTPUT PENTODE in original packaging . Classic vintage "ROBOT" appearance...looks very impressive in operation . Great WW2 ERA High Power tube for tha

 

This auction is for a lot of (4) good used Amperex "PQ" type 7119 (E182CC) twin triode vacuum tubes made at the Herleen plant in Holland. Three of these premium quality tubes have matching delta date

 

This lot is exactly as shown in photo. Three long screws and 3 wood hole recess covers for Marantz wood cabinets that come in three pieces (top and two sides) commonly seen on receivers and tape decks

 

Here is six almost new Maxell UD/XL 35-90B 1/4” recording tape on a 7" reel. This is an archive tape from the Grace Cathedral. It was opened, put on the recorder, recorded on, put back in its plasti

 

Linn Sondek LP12 serial number 22219, with Grace G 707 Tone arm, and a Supex 900 Cartridge. original smoke cover has some lignt scuffs, and one hindge in the back has a broken piece, however does not

 

HERE'SFIVE 5Y3 VACUUM TUBES tested on the Hickok 539C tube tester ALL TESTED VERY GOOD. AS SEEN IN PHOTO.1 LB SHIP WEIGHTOFFERING AS IS. Check out my other items!PLEASE NOTE: AS WITH ALL VINTAGE ELECT