Approximate size 8 1/2" by 11". May have graphics on the reverse side too. Not from a magazine.
eBay
The Hohner International Panther Mega-10 Practice Guitar Amplifier is a 20W solid-state combo amp designed specifically for practice venues. With a single 4 Ohm speaker, this unit is compact and versatile for beginners and intermediate players. The sleek black design and Panther product line branding make it a stylish addition to any musician's setup. Manufactured in China, this amplifier delivers reliable performance for honing your guitar skills in a practice environment.
eBay
eBay
Introducing the Hohner Panther Amplifier, a powerful 20W combo amp designed for electric guitars. Made by Hohner International, this amplifier has a sleek black finish and is compatible with 4 Ohm impedance systems.
eBay