This was presented by Mr & Mrs. Isaac Saller in 1890 who lived at 2115 Spring Garden St., which is located in Philadelphia, PA. There are 2 names written in cursive on this bookplate but I cannot decipher their full names. Although there are other Beth Israel synagogues in the United States, Philadelphia is the only city that has a Beth Israel and a 2115 Spring Garden St. The Sallers are also listed in the 1890 Boyd's Blue Book for Philadelphia
This bookplate measures 3 1/2" x 4 1/2" and is in very good condition.
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