Audemars Piguet Royal Oak 5402SA 1977, excellent and sharp case that has recently been polished and shows very light wear from use, excellent original and very rare tritium dial, there is a light scratch above the 6 o'clock marker, hands appears to be newer service tritium units from the 90's, excellent original bracelet that doesn't show any stretch from use, correct "no logo" crown, no service history, perfect working conditions