All 'Skorpion' regimental badges were issued after the war starting from badge no. 1 issued on 15 May 1946 to płk Ignacy Kowalczewski and ending in badge no.845 awarded to plut. Viktor Dłutek. A further set was awarded January 1947 numbered 1/ to 126/ (no.114 belonged to my late father) there were also a few others awarded during this time but no more than 6 to 8.
It is hard to say if your badge is genuine, the spinner is probably not, but the photo shows signs of a larger spinner mark on the 'Cassino Cross' bars. This would be correct. The curve to the badge looks right. Later reproductions had a much less pronnouced curve to the bagde. Not all are numbered. The coloured stains are probably from the enamelling proccess rather than anything else I have seen this before on the black enamel of 'Skorpion' badges.
There were several 'Skorpion' breast badge and collar pennon variants made by different jewellers. Early Italian made had gold coloured skorpion and later English versions silver metal. I do have several of these breast badges, beret skorpion badges, collar pennon sets and documents so will try and photograph some of them over Christmas.