U-Boat IFO Left Hook Auto Stainless Steel Strap Watch. This U-Boat measures 52mm in diameter featuring lume numeral and baton hour markers. This U-Boat is accompanied by a U-Boat strap and buckle. The caseback is stamped "IFO GROUP ITALY 100 METRI MECCANICA SVIZZERA CASSA ACCIAIO 053". Condition: (Near Mint).