Courtesy of Bill Gates, Oregon, USA The RM stoves I've seen have not been marked with a model number. In a 1954 brochure RM use the number 35 to denote both the collapsible & the fixed leg silent 2 pint models & the number 31 for the roarers. Remove the 3 from 31 & 35 & you have the near universal 1 for roarer & 5 for silent classification. The parts section refers to No:1 & 5 burners.
