This is a Mid 60s Traynor YBA-2. This is a great low wattage amp for guitar or bass. The circuit is similar to a Tweed Fender Deluxe - including cathode biased GE 6V6 output section, and a 5Y3 rectifier tube. This one has been taken out of its original wood case and painted black (most likely to cover any rust that these would commonly have), and the front gate was added for protection.