Circa 1907-1947 period hallmark, pattern number 26454, the first engraved "C. S. H. B. C. / Special Race / Columbus Day 1935 / Won by / Pilgrim" and the second engraved "C. S. H. B. C. / Atlantic Class / Special Race / July 4, 1933 / Won by / Thane."
3 in.
6.9 total troy oz.
The abbreviation likely for Cold Spring Harbor Beach Club
