**SPECIFICATIONS** **Brand:** Audemars Piguet **Model:** Quantième Perpétuel **Reference:** 25657BA **Year:** 1980s **Case Number:** C82518 **Case Material:** Yellow gold **Diameter:** 36 mm **Lug Width:** 20 mm **Thickness:** 7.8 mm **Lug-to-Lug:** 38.0 mm **Dial:** White **Lume:** None **Crystal:** Sapphire **Movement:** Automatic **Caliber:** AP 2120/2800 **Bracelet/Strap:** Audemars Piguet black alligator strap (short length) with signed yellow gold tang buckle **CONDITION** **Case:** The yellow gold case shows light signs of wear including a few hairlines, faint scratches, and micro nicks, but the overall presentation is clean. The lugs are nice and thick with excellent definition at the edges. The brushed case sides remain nice with very little wear. The caseback shows a couple tiny scratches and a few micro marks near the caseback edge at 10 o'clock. The backs of the lugs show light signs of prior strap removal. The model, serial number, and hallmark engravings remain crisp and deep. **Dial, Hands, & Crystal:** The white dial and polished hands are in pristine condition with no notable imperfections. The sapphire crystal is squeaky clean and scratch-free. **Bracelet/Strap:** The Audemars Piguet black alligator strap is in mint condition with virtually no wear present. The ACM saffiano strap is lightly used with plenty of life left to give. The yellow gold Audemars Piguet tang buckle exhibits light wear in the form of hairlines and a couple tiny scratches. The AP signature remains legible and detailed. **MOVEMENT** **Timing:** The watch has been measured with a timegrapher at six different positions. The rate, amplitude, and beat error are within acceptable ranges. While resting face up, the rate is +17s/d. **Functions:** All functions including the crown winding, time setting, and push buttons are working as expected. **Service History:** Unknown. **WHAT'S INCLUDED** Pictures: [https://imgur.com/a/NMGkiu8](https://imgur.com/a/NMGkiu8) Timestamp: [https://imgur.com/a/FJrmThg](https://imgur.com/a/FJrmThg) **PRICE & DELIVERY** I'm asking **$19,300** net to me via bank transfer, Zelle, or PayPal + fees. The price includes expedited shipping via FedEx within the U.S. and internationally. Feel free to reach out if you have any questions. Thanks for looking!