細節
ROLEX, "ULTRA PRIMA" REF. 1879
STAINELSS STEEL MANUAL-WINDING RECTANGULAR WRISTWATCH WITH SMALL SECONDS
CASE NO. 012157, CIRCA 1930
Tonneau-shaped mechanical movement, 15 jewels, index regulator, the silvery dial with Arabic numerals, outer minute track, engine-turned subdial for small seconds, in two-part case, snap-on back, dial and movement signed
Dimensions: 20 x 36 mm. (including lugs)