A 
Supro "Res O Glass" bodied guitar with 3 a side headstock from the mid 1960s. This guitar was manufactured by the historic USA company - National. This company is very famous for their resonator guitars and many other classic electric models from the 1950s and 1960s. The pick ups on this guitar were designed by National - as were all 3 kinds of pickups used on National guitars. In this guitar, they are similar in design to De Armonds but without poles through the magnet. Instead, the coil is wound directly around the magnet. They deliver a super tone.
All in very good condition.