This is a US-made Primus. I most kindly got this as a gift from abbahco1 long ago after helping him out with some stove deals and transactions from Sweden. Knowing my interest in the really old Primus stoves, he knew I couldn't resist a US-made version. The - oh, so lovely - engraving on these US-made stoves says Primus No.1, but it was called Primus No.103 in catalogues when presented in this version with fixed legs. Like this one (catalogue page 6/image no.8). As usual with the early US-Primus, it has the older type of pump with the old NRV we see in the first Swedish made stoves. I think the burner is the correct type for the period aswell.