Released in 1989, reference 3969 was designed to commemorate Patek Philippe's 150th anniversary. The smooth tonneau-shaped references the jump hour wristwatches that Patek Philippe original launched in the 1920's.
Each time the minute hand rotates a full hour, the small white disk 'jumps' to the next hour, thereby giving the watch its unique name. Released in limited production, the present watch is one of 450 pieces ever produced.

Ref Variations: 3969R, 3969P,