This is my Coleman Canada 500B I found a few years ago. I don't see this model listed in the SRG, so here is one. This is the last model of the "Speedmaster"( Sportsmaster?) produced by Coleman . Fount is all steel. Burner plate secured by threaded stud &nut. Fuel cap is late type painted. Date code 1/73. And as all the others before it burns like a champ.