Drums were not the only market for wrap. Seldom did a drum maker specify a unique design that was proprietary. The wrap maker kicked out some patterns, offered samples to the companies and waited for orders. Usually , there would be multiple orders for the same thing, sometimes , only one company would order and sometimes , no-one would order( man , that is a rare wrap! do you know who used that?--- answer----nobody). If there were multiple orders, then the price would reflect the production run, one order would mean , more Dineros. Occasionally , a company would ask for a custom design, even more Dineros.
Wraps are also used by other musical instrument makers; Accordian makers, stringed instrument makers as well as Sign Makers,Industrial Designers, Decorators , Hairdressers,Shoemakers, Women's Foundation Garment Designers and Lunchpails .
Your pieces could be from anything. I once ran across an Upholsterer, that had wrap set aside for covering hard panels in certain pieces of upholstered furniture. One can easily see the application in an upholstered Diner booth, or women's undergarments---- W.M.P. Necklace for a bra or Cherry Ripple for a pair of underpants?