I thought it was a symbol related to some truck drivers union, because I see it every time I "check the plumbing" in a motorway service area.
The image of Othin was popularised by Richard Wagner in his epic operatic cycle "Der Ring des Nibelung".
Odin (/ˈoʊdɪn/; from Old Norse: Óðinn, IPA: [ˈoːðinː]) is a widely revered god in Germanic mythology. Norse mythology, the source of most surviving information about him, associates Odin with wisdom, healing, death, royalty, the gallows, knowledge, war, battle, victory, sorcery, poetry, frenzy, and the runic alphabet, and projects him as the husband of the goddess Frigg. In wider Germanic mythology and paganism, the god was known in Old English and Old Saxon as Wōden, in Old Dutch as Wuodan, and in Old High German as Wuotan, all ultimately stemming from the Proto-Germanic theonym *Wōđanaz, meaning 'lord of frenzy', or 'leader of the possessed'. (Wiki)Is "Othin" another form of Odin?
That reminds me of, has the same spirit as a couple of family mottoes that I have encountered: Irish Clan Monaghan's felis demulcta mitis ("the stroked cat is calm"), and touch not the cat bot a glove (Scots English for "do not touch the cat without a glove") of the Scottish Clan MacPherson.The motto translates to - a sleeping dragon (is) never to be tickeled.
Isn't this a Prussian iron cross?Cross pattée (sometimes reffered as Maltese Iron Cross) - popular decorative motif among biker groups (jackets) and truck drivers (I saw couple of times German brummis having their windscreen decorated with lights and stickers shaped in such cross).
There must be some connection between the two crosses, since the German Knights of the Order of Saint John had an "auberge" in Malta:Such shape comes in many colours (black, red, etc.) I posted first one from wikicommons
I think Eisernes Kreutz has distinctive white rim
These are all typical heraldic symbols (heraldry is a hobby of mine). Pictured above on the stone tablet is a true "Cross Maltese". Adrian's crosses are both examples of "Cross Patee", with the Eisernes Kreutz simply being a Cross Patee with a type of embellishment called, variously, an orle or a tressure (this example is probably an orle, as a tressure tends to be quite narrow...really just a line).