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#561 - CD 176 - Whitall Tatum "mushroom." - Straw. 
- Starting Bid: $4,000.00
- 0 Bid(s)
- Lot # 561
- System ID # 274743
- End Date
- Start Date
#561 CD 176 WHITALL TATUM CO. NO 12. MADE IN U.S.A. PATENT NO. 1708038. Straw.
A patent was issued to Leon T. Wilson of East Orange, New Jersey, assignor to American Telephone and Telegraph Company, a corporation of New York. Filed December 24, 1925. Theoretically, low leakage loss was achieved by forming insulators having a large outer diameter compared to the diameter of the pin.
Some examples of the rare "mushroom" were discovered on the Bonneville Salt Flats in Utah decades ago. Aside from those, a small number have surfaced in New Jersey, some with former employees who worked at the Whitall Tatum/Armstrong/Kerr factory in Millville.
Pioneer collector and long time Whitall Tatum/Armstrong specialist Bob Moss mentions there were only 50 of these accounted for in the 1938 inventory at the Whitall Tatum plant. Even "fifty" seems like a large number compared to the much smaller, approximately 12-15 confirmed in the hobby today.
Exceptional, very near mint+ condition.
Dick Bowman collection.