COMPARING ELGIN BEST 21J RR 16 SIZE BALANCES
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  1. #1
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    COMPARING ELGIN BEST 21J RR 16 SIZE BALANCES

    HEre model 270, 1900 and model 571, 1950. 270 has smaller diameter split rim with 14 screws, 50 year newer design 571 has larger diameter solid rim with 10 screws because uses stable alloy material in rim and spring. 270 nicer, but 571 the most accurate Elgin 16 size?
    artb

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  2. #2
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    Re: COMPARING ELGIN BEST 21J RR 16 SIZE BALANCES

    Art,

    Your Elgin 3FB 21 jewel is beautiful. I have a few 17J and 15J Elgin 3FBs but no 21j as yet. The 571 shows 8 adjustments, which is a bit misleading as they are using isochonism and temperature for two of the adjustments (the same two as an adjusted only watch). The additional adjustment was for crown down. A normal RR watch has crown up, crown L, crown R, face up, and face down (5 positions) and sometimes mentioning temperature and isochronism. I have a 571 the same as yours, but nameless, yet to date I have not checked its's timekeeping. On the other hand I do have a 590 BWR, 21j, adj. to five positions, temperature, and, I'm assuming, isochronism as a given. Made in 1945-46 it can still keep about +/- 1 sec. per day while wearing and as all Elgins from this post war period it has the solid alloy (i.e. elinivar, etc.) balance (even the lowly 15J 575).

    Attachment 2774186
    571 16s J372244 (1948)

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    575 16s J404250 (1948)



    Attachment 2774194

    590 16s 43394893 (1945)

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    616 16s F169813 (1951)

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