TTN, do they look like respectable copies?
I wouldn't got to these people for a copy
Charlie Golf. There is a very good firm of medallists I have used for replacement medals and I will PM you their name as I cant advertise them on here. The replacements they do would fool anybody at three paces. They are not "cast in pewter" but die struck in cupro-nickel and silver plated. If required they can be named for you in properly impressed naming (not engraved) - all in all almost as good as the real thing. I know a Battle of Britain veteran who has worn a set of their medals, including a DFC, on many occasions including in the presence of royalty (his own were stolen many years ago) and nobody has ever noticed the difference!