My guess the silver is from salvaged coins, a common practice by silversmiths. The Maria Theresa thaler, common in Arabia in 19th & early 20 c., was .833 silver & .166 copper. The silver sheath and the Omani coin have a similar patina. Also, I tested the silver on my better kaskara sword grips and they indicated color (brown) about 80%. You can order a inexpensive silver testing solution on-line. Not all that precise, but will give you a ballpark.
Ed
Last edited by Edster; 21st March 2020 at 05:38 PM.
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