NOTE: String ends on new and old A-Model harps slip over anchor pins at the wide end of the instrument. Pins are usually hidden under a plastic cover which must be removed or flipped up to change strings.

For longest wear and best tone, string windings (strings 1F - 13C#) should be as long as possible without resting directly on the bridge at either end. Winding length on this string is optimized for Oscar Schmidt OS73B & OS73C Autoharps (the black "1930's A-Model Reissue" autoharps that are still in production).

String length on the OS73 autoharps is a little longer than on the original pre-1967 instruments.  On the OS73 models, the length of the 1F string from bridge to bridge is 19".  (This contrasts with 18-1/2" on the pre-1967 models).