This is a Bradford (W.T. Grant Department Store) labeled vintage tube amp made by the Estey company in Harmony, Pennsylvania. Estey also made Magnatone amps. The company had just moved production from California to Harmony, PA. The Bradford model number is C-EST-58271. According to the schematic, Estey also called this model a PL22. It has an very interesting and unusual tube compliment - a 12DW7 (7247), a 12AX7 (7025), and a Telefunken 6UH8 (ELL80) dual pentode power tube! Very unusual tube to find in a guitar amp! Very cool amp with a unique design. It also features a pop top for easy access to the innards, just like an old Traynor.