Paula says -

"A really striking large horse buckle. Silver Strike is a registered trademark of the 3-D Belt Company of Schulenburg, Texas. Although 3-D Silver Strike belt buckles can be either sterling silver plated or solid sterling silver, I'd guess this one is sterling silver plated with brass accents. There is also a rich adobe brown color accent around the edge giving the buckle a real southwestern look.

"Sticker on back says '3-D Belt Company' and the original yellow price tag says 39.95. This buckle is a rare vintage design that is no longer available from the company. The buckle is new, never used, but has scratches from shelf wear and storage."