Stock photo. One coil pair each of:
United States - General Issue - 3.1c - Scott#: 1613 - Six-string Guitar
United States - General Issue - 7.7c - Scott#: 1614 - Saxhorns
United States - General Issue - 7.9c - Scott#: 1615 - Drum
United States - General Issue - 8.4c - Scott#: 1615C - Steinway Grand Piano