ROSE GOLD PATEK PHILIPPE REF. 2508 “ALBONICO BIELLA", SOLD IN 1956 Two body circular 18K rose gold case, n. 688033, flat bezel, concave lugs, screw back. Not original leather strap and buckle.
Silvered dial signed, retailed by “Albonico Biella”, applied arrow and square faceted indexes, minute and 1/5th of second divisions. Gold trylon hands and centered seconds.
Signed manual winding movement, rhodium-plated caliber 27-SC, n. 704514, antimagnetic dustcover, indirect seconds, fausses-côtes decoration, 18 jewels, lever escapement, cut compensated bimetallic balance with screws, blued Breguet hairspring, micrometer swan-neck regulator. 
Accompanied by Patek Phillippe’s extract from the archives.
Diameter Ø: 35 mm
Note: working.