This Guitar Amp GM-10 is New, Open Box. I see similar amps Listed under the Glen Burton name but this one makes no mention of that name, but looks exactly like it. Here's a summary:
The GM-10 is a basic, ultra-budget 10-watt solid-state electric guitar practice amplifier typically sold online or in starter packs for about $25 to $44 used. It features a small speaker, a simple 1/4-inch guitar input, and basic volume, bass, and treble controls.