Early Bulbar Tube
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The end connection The flat
disc anode The anti-cathode The cathode
and focal spot |
10”(25cms) long and 3.75”(9.5cms) bulb, dating probably to the early years of the 20th Century. Flat aluminum disc anode Concave aluminum cathode, showing definite discoloration 45 degrees anti-cathode. Shiny platinum target, held in place by 4 small claws, and showing some erosion at the focal spot.. Platinum wire electrode terminals looped around the neck of the copper hemispheric external connections of the tube. No regeneration device. No maker’s name. Serial number “4657” etched on the glass arm.
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