Try and get some close-ups of the marks, the zig-zag mark (diet) is from the assayer removing a small amount of silver to test the quality. A full shot of the piece might also aid in identification.
Can't quite make out the center mark, but if it's an "E" in a Maple leaf, the maker would be P.W.Ellis & Co. of Toronto, Ontario; founded in 1877, taken over by Birks in 1928.
Believe your piece is a zarf, a holder for porcelain Turkish coffee cups called finjans, they often turn up without the liners, the small foot or base is distinctive and often screws on. The first mark is the Turkish/Ottoman Empire tughra, symbol for the reigning Sultan at the time the piece was mad...
Please understand that the the swastika or fylfot has been a decorative motif and symbol of good luck in many different cultures for centuries, dating back as far as ancient Mesopotamia, India and Tibet. Native Americans refer to it as "whirling logs", though most Indian artisans stopped using it af...
I've seen Gorham marked "G.M. Co.", used on pieces for export to the U.K. (believe the regular Gorham pseudo British-type marks would have been confusing). Would guess the triangle is the Birmingham import mark, used since 1904, and you should be able to date it by the "g" date c...
Your marks are EPNS for Electro Plated Nickel Silver. The spoon is silverplated over a metal alloy containing no silver. The style of the letters is just a generic Old English type, having nothing to do with the date or town of manufacture.
Noel Turner's 1972 book American Silver Flatware 1837-1910 , basically limits content to pieces from those years, your variation happened to be illustrated, but there might have been others in Majestic. Many patterns were considered multi-motif; Gorham's Versailles, Tiffany's Audubon, and Towle's Ar...
Very badly worn silverplate, appears to be over copper. E.G.Webster & Son formed in 1886, acquired in 1928 by International, apparently the mark continued to be used by Int'l. into the 1950s-60s.
Silverplate made by the Three Crowns Silversmiths of Pottstown, PA; in business from 1946 until sometime in the '60s, specializing in Scandinavian-style pieces.