This is a museum quality reproduction of a WWI Oberser wing in sterling silver. This wing is 2 inches wide and from the construction the original was made up of two pieces solder together which was not uncommon in that era. Also rare in Observer wings is the addition of the letters US. Noit common at all except Observers attached to the Russian Air Service. This is a rather unusal wing design and the feathering looks a bit likt that used by Haltom Jewelers of Ft. Worth.