There seen quite a few pictures of Mk III Ross rifles with Win. A5 scopes on them.

I have seen them on line but don`t recall where at the moment.

The Ross Rifle Story has a good pic of one.

Clive Law`s book about Canadianicon snipers "Without Warning has another photo of the same rifle. There are a couple of period photos of snipers with Rosses and A5s in the same book.