It is thought that date coding on petrol blowlamps started in c Hi Ross, No Worries! However, Primus made and sold literally millions of stoves, so there must have been hundreds if not thousands of workers engaged in the very skilled job of tank manufacture. These stoves have larger founts for industrial use but lack the optional cooking stands. The range of blowlamps and related "soldering equipment" thought to be produced initially, from c Several examples of such markings on stoves can be seen on the Classic Camp Stoves Site. A number of variations are shown; note on the left that "AktBol" Aktiebolaget is not present as on the other examples.
Date codes introduced in continued to appear on stoves until ; and on blowlamps until at least
Sweden stove manufacturers
These have no makings. Aren't stoves fascinating? From A until at least KPrimus used only a single letter as a year code. With a few exceptions, any Primus blowlamp manufactured between c for petrol blowlamps and c or stoves between and c can be dated by inspection of the date code on the tank. Please visit our sister site at Classic Pressure Lamps. South Wales UK.