from around 1955/6 to 1962 Found on 71L & various SP models Available from Gas Pressure Appliance Decals for those who want to buy one ready made. Contact me for high res file
I have a Primus 96 box with a nearly identical decal, except that the flame color, just above the red part, is blue. It is badly defaced, so I'm not including a photo. Yonadav