As per the table on page 148 of "The Crown Jewels" book, Serial Numbers from 600035 to 628717 were made as m38 at Husqvarna Vapenfabriks Aktiebolag in 1941. That appears to have been the first year of production, of those rifles, at that place. A total of 65,588 rifles, of that type, were made there, from 1941 to 1944, inclusive. In other places in the book, it says that original Husqvarna m38 production may have used straight handle bolts made at Carl Gustaf armoury, until the Husqvarna "curved down" handle bolts were approved for use. In the OP picture, that bolt handle is now neither type - has had a new handle installed or the original handle was cut, welded and ground or "forged" to be "scope friendly".
Is typical that a part made at the Carl Gustaf armoury will be stamped with a Swede crown that is "up/down" - oriented to be "straight", whereas an identical part made at the Husqvarna factory will have the same crown stamp, but "tilted" - it seems to vary, but, as much as 45 degrees from vertical, either way (to the left or to the right). Of the Swede made rifles that are here - is not real uncommon to find both markings in the same rifle - the parts are identical shape and size - but different makers. I have no way to know if the parts were substituted when in service in Swede military or by a subsequent civilian owner. Various "spare parts", originally from Swede military stores, used to be readily available in North America from places like TradeEx - including newly made, but never installed, pre-chambered barrels.
