The following two items are a set. They are in relatively good condition for their age. Please note that the internal rust has been mostly left as is. Please check the photos (ES-4 is on the left or top in the photos). Both have a pitch around C. ■ LP Bongo Bell ES-4 ■ LP Bongo Bell Esoteric Series ※ About the LP Bongo Bell Esoteric Series: "Esoteric" means "understood by or meant for only the select few, of or relating to things that are known by only a few people." This is likely from the 1970s and is extremely rare. The sound has a lot of overtones and is lively. Depending on the muting and playing techniques, it can be widely used in Latin bands, percussion in wind ensembles, and rhythm ensembles.