Case size: 40 mm
Material: steel
Movement: automatic, caliber 1530
Year: circa 1964
Crystal: plastic crystal
Bracelet: Oyster bracelet, folding clasp, ref. 4.72/358
Reference number: 5513
Serial number: 1.061.023
Case number: 5513 / 1.64
Please keep in mind that an overhaul might be needed, since no service history is available.