1959 Danelectro Longhorn 4623 six string bass guitar, ser. no. 5xx1, heavily worn bronze burst finish, logo worn from head although shadow can be faintly seen, replaced knobs, electrics in working order,
Danelectro #4623 Longhorn Bass 6 strings | eBay
Six-String Basses from the 1950s and '60s | Vintage Guitar® magazine