Here are both an antique silver plated julep strainer and bar spoon marked “W. R.” with a Maltese Cross symbol before it and a Keystone figure after it; this mark is commonly called “W. R. Keystone” and is one of the marks used by William A. Rogers. The strainer measures 5 and 3/4ths inches in length and the bowl measures approximately 2 and 3/4ths inches wide. The handle has a shield shape cut-out. The Windsor twist bar spoon is 8 inches long.
Harry Johnson, in his 1888 book, “The New and Improved Illustrated Bartender’s Manual” states that the strainer should be “placed in the drink and served”. You can read more about this in my blog post The Victorian Bar, here: http://queenofsienna.wordpress.com/2013/06/29/the-victorian-bar/