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1. Vintage2 VTG, 30-40S Philips Miniwatt radio tubes, CF 50 & AF 7, made in Holland, with gold-plated glass. Tubes are untested, functionality is not guaranteed. Original cardboard packaging. Items are of collector\'s value.CF 50 lamp weight: 50 g (1.8 oz). Height: 130 mm. AF 7 lamp weight: 38 g (1.3 oz). Height: 100 mm.Note: The CF 50 tube is a low-noise gold-plated pentode tube, specifically developed and used in the 1930s and 1940s as a preamplifier for condenser and ribbon microphones. The gold coating on the tube is an electrostatic shield that protects the sensitive circuit from electromagnetic interference. The tube is renowned for its minimal self-noise and \"microphony effect\" (when vibrations in the tube are transmitted into sound). Base type: P-type (also known as \"spider\" or side contact). The AF 7 tube was used in superheterodyne receivers until the late 1930s. Base type: P-type (also known as \"spider\" or side contact).
2. TheThe lamps have not been tested, and their functionality is not guaranteed. The lamps have no visible external mechanical damage, scratches, cracks, or chips. The original cardboard packaging has minor abrasions and scratches. See photos.
3. Worldwide shipping for 30 USD; shipping service takes about14-23 business days. Item location- Vaduz, Liechtenstein.
4. International returns accepted,30 days.
5. I highly appreciate your POSITIVE response.
6. Feel free for any questions.
