So, have recently put my hands on a Primus 0, traveling style, from 1912 (A). Just one legg is correct and they have been welded with a ring. The other is a no 9 from 1936 (AA), with old style feet, it came in a nice box. I have seen this box before, so there are more around.
That 1912 stove seem to be inspired by the early fixed leggers converted by Nansen with swinging legs and quick-shift between roarer and silent burners.
