Thank you very much for that! The style is remarkably similar albeit the colours rather brighter, almost gaudy. I can't find any mark/signature on my piece however - Coman claims to have signed every piece. It could be that he failed to sign it or it has been erased but I think that would leave an obvious 'graze'? The link you kindly provided seemed to indicate Coman's work had been mistaken for, or passed off as, earlier work?
It would be interesting to view examples of earlier or similar pieces not by Coman to be sure but your reply has given a great start. Thank you again.