This listing of three (3) new old stock, new in box RCA 6CD6GA Beam Power tubes is as follows:
Tube One: Tests 58 (116%) RCA stenciled on base with code LW. 6CD6GA stenciled on glass. Black plate. Top halo getter. Chrome Dome.
Tube Two: Test 58 (116%) RCA stenciled on base with code MB. 6CD6GA stenciled on glass. Black plate. Top halo getter. Chrome Dome.
Tube Three: Tests 66 (130%) RCA stenciled on base with code BD. 6CD6GA stenciled on glass. Black plate. Side halo getter. Side flashing.
Tested on TV-7/U where minimum is 33 (65%); new is 50 (100%).
All three have an O getter as described above, black plates, good flashing and their boxes.