This is a Vintage Scottish Celtic Penannular pin brooch. It is marked STERLING SILVER on the back of both pieces. Please see close-up photographs provided for more details and visual confirmation of condition for yourself.
Condition report: Normal signs of age and use wear including some surface scuffs and minor impact marks etc. The central dart has been soldered on, it is an old repair.My stock ref: #ESK/18324/1QTY00 in jewellery box #ESKR25. GSP sorts any paperwork etc. I have no control over the prices that GSP set.
Scale is usually an English 1 penny coin which is 20mm in diameter which is just short of 7/8ths of an inch in diameter, or a universal sized Coke can (330ml). If you see A/F = a/f in the title or description it means "as found" condition which may have scuffs, scratches and damage.
In relation to all my listings it does not mean " about fine ". I have used A/F for "as found" for 50 years.