Early 50’s & 60’s RCA, GE, Sylvania, Westinghouse - 12AX7/ECC83/7025/6681/5751 from $300
The following tubes have been tested on a calibrated Hickok TV-7B/U where a value of 32 (ie. Gm 800) is the minimum Gm requirement. All these tubes tested around 38 ~ 62, ie. Gm 950 ~ 1550 in good to new condition, all tubes come with measurement results.

1. 2pcs. RCA 5751, short grey plate, triple mica, copper grid rods, wafer rods, D-getter, nib matched pair - $1200
2. 1pc. GE RCAF JLRV 5751, short grey plate, triple mica, copper grid rods, wafer rods, D-getter, 62-40, good - $400
3. 1pc. GE 5751, short grey plate, triple mica, copper grid rods, wafer rods, D-getter, 68-52, good - $300
4. 1pc. GE 5751, short black plate, triple mica, copper grid rods, wafer rods, D-getter, 57-13, good - $500
5. 1pc. GE 5751, 5-star, short grey plate, triple mica, copper grid rods, wafer rods, D-getter, good - $400
6. 3pcs. Westinghouse GB5751, short grey plate, triple mica, copper grid rods, wafer rods, square getter, nib - $600 each.
7. 1pc. RCA 5751, short black plate, triple mica, wafer rods, square getter, nib - $600
8. 1pc. Sylvania JHS 5751, short black plate, triple mica, copper grid rods, wafer rods, square getter, 4-57, nib - $600
9. 1pc. RCA 5751, short grey plate, triple mica, wafer rods, large disc getter, nib - $600
10. 2pcs. Sylvania 5751, short grey plate, triple mica, copper grid rods, wafer rods, large disc getter, nib matched pair - $1200
11. 1pc. Sylvania 5751, short grey plate, triple mica, copper grid rods, wafer rods, large O- getter, good - $400
12. 3pcs. GE 5751, short grey plate, triple mica, copper grid rods, wafer rods, O-getter, new - $600 each.
13. 2pcs. RCA 5751, short black plate, wafer rods, O-getter, nib matched pair - $1000
14. 1pc. RCA JAN-5751, short black plate, wafer rods, O-getter, new - $500
15. 5pcs. Sylvania USAF 12AX7WA, long grey plate, 7-64, O-getter, nib - $500 each.
16. 1pc. Sylvania JHS 12AX7WA, long grey plate, 2-62, copper grid rods, O-getter, nib - $500
17. 1pc. Sylvania GB5751, short grey plate, triple mica, gold pins, copper grid rods, wafer rods, large O-getter, nib - $600
18. 1pc. Sylvania GB5751, short grey plate, copper grid rods, disc getter, nib - $500
19. 2pcs. Sylvania 7025A/12AX7A, long grey plate, copper grid rods, O-getter, nos matched pair - $1000
20. 1pc. Sylvania 12AX7A, long grey plate, copper grid rods, O-getter, nib - $500

絕對正貨，請安心購買。
市區地鐵站交收，meet-up at MTR Stations.
I am a vintage hi-fi and electronic enthusiast, all vacuum tubes are my private collection from Canada. 所有出讓的真空管都是小弟從加拿大带返之私人收藏。