We have recently moved and inherited a functioning (not yet brave enough to use by us) stove which is labelled as a Courtier 500. I have done some detective work but whilst I can find other Courtier 700 models have found nothing about this one. It is a beautiful turquoise vitreous enamel and the previous owner has kindly left some expertly wrapped strips of replacement glass. Any information would be much appreciated, thanks in advance.