Simply knowing the maximum aperture won't do it, you need to tell us what lenses. For example, if that Copal 1 f/6.8 is for a 210 Geronar (Caltar II-E), I have a set so they'll be right on. If it's for a 210 Angulon, they won't be exact but are probably close enough. They're unlikely to be close for any other focal length.

Send me a PM if interested.