Definitely a tailwheel but not an L-18. Assuming it was Italian registered - the reg may have been touched out, but why not the titles? - but it may well be from somewhere else, possibly an American 3" reg which were still evident on some light aircraft some years after the 12" requirement was reinstated.
I found a pic of the Italian Cubs I mentioned being at Redhill in 1987, their schemes were quite different!
My feeling is it's a one off homebuilt, possibly a write off despite the damage appearing to be modest.