Replacement Lee Oskar reed plates in C minor for Harmonic Minor. The supplier lists the plate model as RPHMCm (1910HRPCm), while the product model is given as 1910RPHM-Cm.
One of the core concepts of the Lee Oskar system is that you can replace the reed plates yourself. When a harmonica is worn, it is usually the reeds that need replacing, while the comb and cover plates can still be used. With a screwdriver, you can easily replace the reed plates and restore the harmonica to like-new condition.