Here is an antique silver plated julep strainer that is marked “B. S. Co. A1”. This stands for Bridgeport Silver Co. and is a backstamp of Holmes & Edwards who advertised items with this mark being made of nickel silver metal with heavy silver plating. It measures approximately 5 and 3/4ths inches in length and the bowl measures approximately 2 and 3/4ths inches wide.
This strainer has a reverse bend handle meaning it is opposite to that commonly found on star julep strainers and those fancy design strainers. I have seen many clover strainers with these reverse bends with various backstamp but this is the first Bridgeport Silver Co. clover strainer that I have seen. The strainer holes are always round and the cut-outs are always a clover on these reverse bends. The clover cut-out on this strainer is smaller than commonly seen on other strainers. I believe these strainers were made for double straining and not primarily for pouring. Please read my blog which explains my reasons for reaching this conclusion https://queenofsienna.wordpress.com/2015/07/20/julep-strainer-unusual-design/
This strainer is available for sale here at my Etsy shop: https://www.etsy.com/listing/623193616/bridgeport-silver-co-julep-strainer