Board Thread:General Discussion/@comment-12757511-20130720013429/@comment-10390252-20130806120639

WC-83 wrote: I'm not so sure, Crimson looked about Glynda's age and Glynda looks a little younger than Ozpin

Ages are difficult to assess in animé. Glynda could be any age from her 20s to the early 60s and that's so with Crimson. Ozpin's grey hair puts him in the 50s to 60s.