Hi Here are some photos of a Svea 121 from the time of "Primus-Svea AB-SWEDEN". This particular company only operated, I believe, from 1965 until 1969/70. The stove came with instructions, dated 1967: https://classiccampstoves.com/threads/9976 It also has prickers, a Svea priming spirit tin, and spanner: This is quite clearly a "proper" Svea stove, with almost every component of the stove marked "Svea", and its part number. There were later Svea 121 stoves, once the Company was acquired by Optimus in 1969/70, but despite being marked up as such, they were clearly Optimus No.00 clones. Best Regards, Kerophile.
