Its quite a modern coin 1965 Yugoslavia 20 para which is toned on the obverse - shiny on the reverse has some doubling around the P A R in PARA and looks to be off centre to me. I have no knowledge of Yugoslavian coins so I welcome your comments
Paddyman you old timer I was born in 1970 so oldish but still horribly immature! 40 is the old age of youth 50 is the youth of old age. no bursting bubbles today please Paddy