Very rare metal base Philips Miniwatt EL34, SYO code – 55H, from 1955, two slots, welded plates, disc getter. They are made in Eindhoven factory in Holland (NL). Good top getters and not so good printing, black bottom, without original Miniwatt boxes!
This pair is NOS by pure luck, guiding pin was destroyed!
Two slots, welded plates, disc getter version as is shown on this photo! Few more quads and pairs
pair, used, tested good the same version, year 1954
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