Hello to all, I've been lurking on this site for quite a while now and learned a lot from many of you and for that I want to thank you. Now for the topic of this post. I recently got a fountain pen with a Ripedium Point 50 nib. These, as far as I know, were fitted in Czechoslovakian pens made by Centropen. I have a few other pens by Centropen, but this one is not marked in any way - no serial number or name apart for the inscription on the nib. It is a piston filler with an ink window. Does anyone have an idea what model this could be? Maybe a Ripet pen? Thank you!