- acoustic guitars
- bass guitars
- classical guitars
- electric guitars
Marvel was a brand name of the Sorkin Music Company, an amplifier manufacturer and mail-order instrument distributor. The company was founded by Peter Sorkin in 1938 in New York City, and also made Premier and Multivox amplifiers. The guitars were made elsewhere. Sorkin Music closed in 1970.
Source: Sorkin catalogs 1950s to 1970
Source: Guitar Amplifier Encyclopedia. Brian Tarquin