This one is a head scratcher for me. There is no date or indication where it was made. One side of the font is marked with "Col-Max, Coleman" and the other side is stamped in several different languages. The valve wheel is imprinted with "Col-Max 500 c.p." no model number. The chrome plating is fair/poor and overall quality is fair. Numerous stress cracks, too. This leads me to believe it was probably made in Hong Kong for the export trade. I bought it from a seller in Peru. It has a fuel/air mixture screw, and a white inner casing. That's it. Any thoughts or suggestions would be appreciated guys and gals! It's in pretty good cosmetic appearance, and a nice shelf queen right now until I can fix the stress cracks. Where's my can of POR 15?