These are Victor 500 MX gold die cut vinyl decal stickers and they are sold each. They are placed at top of the painted stripe on the alloy gas petrol tank for 1971-73 BSA B50 MX. This is another vinyl decal that I had made for DomiRacer. They are die cut vinyl stickers that are easy to apply. The color of the painted stripe is framed by the gold lines on Victor and MX. These are at the top of the tank side and in the middle of the painted stripe is where the BSA logo goes. I also have the gold BSA logo in a die cut vinyl sticker. 

My name is Tony Schanz, I formerly ran DomiRacer Distributors in Cincinnati, Ohio buying and selling vintage English, Italian, & German motorcycle parts, tools, accessories & memorabilia. DomiRacer closed 6/11/2013, but I still deal in parts, motorbikes, decals, advertising, photos, posters, & more. Please add my store, The Real DomiRacer, to your favorite sellers and watch for other rarities in my future eBay listings.