The Devil's Virtuosos: German Generals At War 1940-45 David Downing St. Martin's Press

The Devil's Virtuosos: German Generals At War 1940-45 David Downing St. Martin's PressThis hardcover book is in very good condition. The spine is in fine shape and the book has no loose pages. The dust jacket is excellent shape. MOST FORMS OF SHIPPING EXCEPT MEDIA MAIL ARE AUTOMATICALLY INSURED UP TO $100. ETSY PURCHASE PROTECTION COVERS ITEMS UP TO $250 IN VALUE. IF AN ITEM IS MARKED "DELIVERED," AND YOU HAVE NOT ACTUALLY RECEIVED IT, THE FIRST STEP IS FOR YOU TO CONSULT YOUR MAIL CARRIER TO GET THE EXACT COORDINATES OF THE DELIVERY

Or maybe not

This Ken-Rad number 80 rectifier tube was tested on our Paul Hart-calibrated TV7/U for shorts

This lot of three type 85 tube was tested on our Paul Hart-calibrated TV7/U for shorts

Tube Two probably has a piece of broken glass in it

All of these tubes have very-good-testing triodes and each has a strong-testing as well as a functioning diode

This matched pair of GE 6AQ5 output tubes was tested on our Paul Hart-calibrated TV7/U for shorts

This matched trio of RCA 6BY5GA tubes were tested on our Paul Hart-calibrated TV7/U for shorts

shields between triodes to eliminate crosstalk

Top: smooth

This perfectly-matched pair of Wards Super Airline black bottle type / number 41 tubes tested as follows on our Paul Hart-calibrated TV7/U:

This Wards type 80 rectifier tube was tested on our Paul Hart-calibrated TV7/U

Transconductance measured 46 where minimum (65%) is 36 and 100% is 55