Talk:Hardcastle

This article has no indication of who authored it, so not sure who to address, but if this discussion page triggers an email to the author, I'd appreciate a come back. I am interested in dating (decade would be good enough) a Hardcastle 'CAMDEN'#45 (stem is probably not original), which is listed in this article as a 'pre-cadogan' model. Nowhere do I see a reference to cadogan in this article or the Dunhill article on this site. Who or what is cadogan and approximately what time frame does 'pre-cadogan' cover? Thanks!