This is a nice grouping of tiny Lapel Pins from the estate of a retired Rock Island Arsenal Employee: Corps of Engineers Pin; Department of the Army Service Pins 10 Years, 15 Years, 30 Years and Retired; AOPA Aircraft Owners and Pilots Association Wings Pin; "WA" Wings Pin; Experimental Aircraft Association Pin; Hamilton-Standard United Aircraft Association Pin. (Note that the two images combined in the first picture are not to the same scale).