3 of the common oval 15mm little American and Swiss movements are shown here. Neglected and unappreciated by users, collectors and nearly everyone, including jewelers that hated to work on them. To me fine little technical accomplishments that I think are interesting. The last U.S. made Elgin near 1960. Looks crude. The amazing 23j 5 position and temperature adjusted U.S. made 1940s wartime Bulova. The unknown maker but nice looking Swiss 1960s mvnt. for a good quality Girard Perrigaux. Nice technical jewelry for eye straining simple timekeepers. Added couple more Hamilton and Longines with big balance leaving little room for mechanism, and last American RR watch Elgin 571 showing relative size.