This small horseshoe charm has a mark, but it's not one I recognize. I tested it though , and it is 9 ct gold. I'm not sure of the age of it either , so I'm calling it Vintage. It measures 5/8 of an inch North to South, and it weighs 1.28 grams.
Another shopper has this item in their Cart or Wish List
Antique English smalls of quality
Specializing in Georgian and Victorian jewelry, English smalls, including leather bound books, silver etc.