Nostalgia is fine. If you want nostalgia, use a Trangia stove. That design is roughly as old as Svea's and offers certain advantages, including availability.

Sometimes, older products fade away and are replaced by inferior products. I don't personally think that's the case here.

Now that you mention it, I may have had the Svea 123. In any case, it had a built-in cleaning needle. My experience with it over a few years was generally negative compared with the earlier, similar and simpler stove I had for nearly 20 years, though can no longer say why.

Oddly, each point in the post immediatly above can be easily and obviously contradicted.