Vintage 1970s USAF PG-58 Pilots Case by American Optical

ARTIFACT: This is a circa 1970s private purchase issue type pair of PG-58 pilot's case used by the United States Air Force. The case are by American Optical and come with their original case. 

VINTAGE: Circa 1970s.

SIZE: Approximately 1-11/16" 

MARKINGS:  12K GF ; Original PG-58 Pilot's Sunglass by American Optical White on case.

ITEM NOTES: This is from a USAF  collection that 

CONDITION: 8- Very Fine-Excellent Case