These are 3-1/4" red, silver, & white on clear background Lightning 650 stickers and they are sold in pairs. They are the stock side cover panel stickers for 1971 BSA A65 Lightning as in the photos. These are not die cut, so you should trim the part number and excess clear background away before applying them. 

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.