Audemars Piguet Automatic Calendar Yellow Gold Reference 25589The AP dressy day dateThe reference 25589 is often referred to as the little brother of the perpetual calendar with which it shares a case shape and general design. This 33mm yellow gold watch remains in really beautiful condition, with a crisp step case feature. The white enamel dial is almost porcelain in finish and has painted roman numeral hour markers. The yellow gold hour and minutes hand are beautifully complemented by blued day and date hands