Regarding last's week's identification of Jules Fonrobert as the "Roberts" bidder in the 1875 Mendes I. Cohen sale, Bob Leonard writes:

Famous Arms of California BG-435 Round Half MS631853 50C Arms of California 50 Cents, BG-435, Low R.5, MS63 PCGS. One of the most famous varieties within the entire California small denomination gold series. The obverse depicts the California state arms, and the reverse emulates loosely emulates the eagle, ribbon, and shield motif used on the Assay Office slugs then in local circulation. Such interesting types would soon belong to the past, since the majority of the Breen-Gillio varieties feature a parade of Liberty, Indian, and wreath types vaguely reminiscent of the Federal gold dollar.

To view the complete lot description, see:1853 50C Arms of California 50 Cents, BG-435, Low R.5(coins.ha.com/c/item.zx?saleNo=444&lotIdNo=18001)

To read the earlier E-Sylum article, see:MORE ON JULES FONROBERT(www.coinbooks.org/esylum_v16n02a15.html)