Vintage Gruen 5816-03 Precision Watch

#Gruen 5816-03 men’s manual wind watch from the 1950’s. Watch is 17 jewels, 10K GF, has concentric ring and a sunken crown to make it more streamlined with genuine farm raised Louisiana alligator band handmade in Italy. SN is 0827040 415-974. Inside case is inscribed with Star Case Co. - Cased and Timed in USA and serial number. Never worn since watch was purchased and maintenanced in 1997. Video shows the working mechanism