CORUM REF 183.510.55 ROMVLUS PERPETUAL CALENDAR NO. 1/25 PINK GOLD Corum, case No. 2251387, Ref. 185.510.55, No. 1/25. Made in a limited edition of 25 pieces circa 2010. Very fine, astronomic, self-winding, water-resistant, 18K pink gold wristwatch with perpetual calendar and moon phases and 18K pink gold Corum buckle. Accompanied by a fitted box, certificate, warranty certificate card (now void), and an instruction booklet. Three-body, solid, polished, wide flat brushed bezel with roman numerals, lapidated concave lugs, corrector buttons on the band, sapphire crystals with display back. Black guilloche with sunburst pattern and painted outer track, connected subsidiary black dials with pink gold outer frame for the date, days of the week, months, leap year and aperture for the moon phases. Pink gold polished and brushed baton hands. Cal. CO-183, rhodium-plated, ornately engraved, skeletonized rotor engraved with CORUM signature, 35 jewels, lever escapement, monometallic balance, shock absorber, and self-compensating flat balance-spring.