1966 Mullard GZ34 / 5AR4 Blackburn (f32 B6B2) NOS Test Amperex Bugle Boy Branding (Holy Grail!)
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For sale is an authentic vintage Mullard GZ34/5AR4, manufactured in Blackburn, UK in February 1966. Etched factory/date code: f32 B6B2 — the most desirable Mullard GZ34 production era.
This tube retains its original Amperex Bugle Boy orange branding, confirming it was sold through Amperex USA during the 1960s. These Bugle-Boy-branded Mullard GZ34s are highly collectible and becoming extremely hard to find.
- Real Mullard Blackburn GZ34
- Date code: f32 B6B2 = Feb 1966
- Original Amperex Bugle Boy orange label
- Tested strong NOS on B&K 707 (90%+, no shorts/leaks)
- Slow warmup, strong getter, tight base
- Stored properly, zero issues
- One of the best/most reliable GZ34s ever made
For questions or more info, see our shop description for contact details— and thanks for stopping by Northside Buy & Sell, LLC!
This will ship fully insured and may require a signature upon delivery.
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| Listed | 7 months ago |
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| Condition | Excellent (Used) Excellent items are almost entirely free from blemishes and other visual defects and have been played or used with the utmost care.Learn more |
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