Hi all, Wanted to share a new acquisition (and my first pocket chronograph). Caliber 19.73N, case serial dates to ~1909, sold in Argentina, where the eBay seller was located. Has an interesting engraving from later in its life (1952) when it was presumably gifted. The dial is perfect and the watch appears (at least to me) to be all-original, although a rough, almost “brushed” finish on the silver case makes me think someone used something overly abrasive to remove prior oxidation. Would other OF members consider a *VERY* light polish to reduce the appearance of the scratching, or leave as is? Also curious if anyone has any additional history on the 19.73 movement (interesting that no mvmt serial is visible, I’m guessing it’s on the dial side) or “Cronometro Medical” models in general. Thanks, and enjoy your weekend!