All prices are plus shipping All these tubes have been tested, many are NOS unless noted as USED.  

ECC88 (6922) – (3) BRIMAR marked Foreign, actually Russian 6N23P tubes $15.

6829 – (2) GE red print in RCA sleeve; 12AT7 substitute $20.  

6BQ7A (6N1P- equiv.) - (2) RCA black plate 1950's in original boxes. $20.

6BQ7A (6N1P equiv.) (1) Heintz & Kaufmann, (GE)  $4.

6BZ7 (6BQ7, 6N1P- equiv.) - (3) CBS 1950's in original boxes.  $12.

6BZ7 (6BQ7, 6N1P- equiv.) - (5) full sleeve of SYLVANIA 1950's yellow print, original boxes. $20. 

12AT7 – (1) Sylvania 1950's black plate double mica tube, no print, tests strong. $5.

12AT7 – (4) NOS Sylvania black plate, green print dated 1953 in Sylvania sleeve – RARE! $40.
(2) NOS Sylvania black plate white print also 1953 date codes. $20.

12AT7 – (1) JHS Sylvania 1952 black plate, double mica spacers; strong. $5.

12AT7 – (1) JHS Sylvania black plate, double mica faint 1954 date code still visible. $7.

12AT7 – (1) JHS Sylvania 1955 date code, black plate, triple mica; pristine, Collins Radio box.  $10.  

12AT7WA – (2) Sylvania JHS dated 1957 green print, gray plate triple mica, square getter, military boxes. $20.

12AT7WA – (4) Sylvania USAF gold print, triple mica air force tubes which had to withstand high altitude and extreme shock; in clean military boxes turning slightly brown with age. $60.

12AT7WA – (6) Sylvania-made for Sperry Gyroscope, packed June 1956, military construction, triple mica, black plates; NOS, high testing, in original white boxes. $120.

12AT7WA – (4) Sylvania JHS triple-mica black plate military tubes in white boxes marked Philco Corp., packaged May 1956; tubes have 1955 date codes. $80.

12AT7WA – (1) NOS Sylvania JHS triple mica, black plate square getter in original white military box 1955 date code. $15.

12AT7WA – (3) NOS JAN CKR (Ken Rad) black plates, square getter and single mica, 1951 date codes in original white military boxes. $60.    

12AT7WC - (2) JAN Phillips tubes with 1987 date codes, LIGHT USE in JAN boxes. $20.

6201 (12AT7) – (3) Mullard Gold Pin 12AT7 tubes, in red, white and blue Mullard boxes. $120.  

CV4024/12AT7WA - (9) Mullard military manufacture with white boxes, cardboard liner, tissue paper and pin protectors, mostly NOS to lightly used. $270.

12AU7 - (1) Sylvania 1950's black long plate, tests strong. $4.

12AU7 – (1) Sylvania black long plate 1953 date code in original SYLVANIA box. $6.

12AU7 – (8) Sylvania 12AU7 black short plate 1955 date codes, green print mostly there; pulled from tone cabinet of organ, which means they were subjected to the lightest use. $45.

12AU7 – (8) Sylvania made for Baldwin Organ Co., with green print & Baldwin logo.  Long gray plates copper rods, square getters, 1959 date codes. $40.

12AU7A – (4) Sylvania made for Baldwin Organ Co., with green print & Baldwin logo. Long plates, copper rods, round getters, 1960 date codes. $20.

12AU7A – (1) Sylvania made for Baldwin Organ Co., with green print & Baldwin logo.  Long plates, copper rods, round getter, 1964 date code. $4.

12AU7WA/5814A – (3) – JAN Sylvania gray plate, triple mica military tubes in browning white military boxes; 2 are date coded 1960 with gold lettering and one (1964) has green lettering. $45.

12AU7 – (6) NOS 1955 CBS Military contract gray short plate date coded 55-35, red print, rectangular getter at top; nice pristine tubes with white boxes with cradles inside to hold tubes securely; (2) 2450/2450; 2400/2450; 2350/2350; 2600/2900; 2400/2600.  $90.

12AX7 – (34) Sylvania made for Baldwin Organ Co., with green print & Baldwin logo. These tubes are indistinguishable from military manufacture and were selected for outstanding durability and tone. Most are used but they test far better than new production and other tubes do.  They have 17mm long gray plates, copper support rods, spiked mica spacers and round getters.

(12) - 26th week of 1960; (12) - 39th week of 1961; (1) - 52nd week of 1961; (2)  - 13th week of 1963;
(7) 26th week 1961. $17.00 each tube

12AX7WA - (2) Sylvania JHS green print, short 15mm plates, square getter, copper support rods, in original military boxes dated 1959.

12AX7/ECC83 - (4) RCA made by Mullard, red boxes. $200.

5751 – (4) JAN PHILLIPS, with 4/85 date code and 2 with 12/85, in clean military boxes. $80.

5751 – (2) GE with May 1987 date codes. $40.

5814 – (2) SYLVANIA  NOS green print, square getter, long black plates with 1953 date codes in original white military boxes.  $40.  

Some 6BQ7A's were sold; all others remain. I am open to offers if my pricing seems high on what you may be interested in.