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Please join our FB group where YOU can post directly.
A Community For People Who Buy, Sell or Collect Antiques, Collectibles and Art
I know it's an older post, but you may still be around to see it, if you haven't found this out elsewhere since.
The bird mark is of HILBORN-HAMBURGER Inc. Established in 1926 by Jerome M. Hilborn & Jerome M. Hamburger, who were formerly with N.S. Meyer Inc. of New York.
Lieutenant Colonel Rank Shoulder Insignia Set