I've only once before seen two 9s together at the same time, at Ross's in 2009, here held by David: Great pair, consider posting more photos of the whole stoves....
Are they in original bags? If so the logo might give a hint of the origin. I have never seen a outher case, only the canvas inner bag without logotype.
Why did some have Halmia and some Optimus engaraved on them and some had nothing at all ?? This is one question I’ve never managed to find the answer too. My one has nothing engraved on it ♂️
@Car Boot Treasure Hunter there are at least 4 variations of Optimus 9. Yours had the Optimus logo on the end cap that you reproduced, because on yours was missing. Nicola