I just bought a Poly Chorus last night from my favorite music shop in Terrassa, SPAIN. The owner knows how much I like Pink Floyd and purchased it in trade with someone with the idea of saving it for me. It came complete with wooden box with a slide top and red graphics painted on in red. There is also a faded ink stamp on the top left corner “2309”. I love this pedal. Does anyone have an idea how old my model is?