"Did you ever see... Is, IMNSHO, the rugby song version, and that may well date from the LP of rugby songs in the 60's (ish)."

I don't think so. My grandmother in Merthyr, born in the 1890s, sang 'Did you ever see?', as did everyone else in the family, and she most certainly would not have heard any recording of rugby songs.

I think Bert Lloyd may have printed the 'Was you ever see' version somewhere, hence it's ascendancy in the folk world. Always struck me as a very odd construction that I never heard in Valleys conversation.