Harmonica Key stickers
Key Stickers that are pre-cut to 3/16" x 5/16" so they fit between reed plates on a Marine Band type harmoncia. There are a wide variety of black stickers with white lettering - for example 12 in the Key of A, 7 in key of Bb, 5 in key of B, etc. The white blank stickers are there for you to mark with a fine tip sharpie for additional notes (two of these stickers will fit on the short side of a harmonica).
The price includes shipping to the USA