Hi, I just purchased the below black chased celluloid fountain pen. The only marking/name/identifier that I can find on it is the name "Mark Jay" on the clip. (It has a Durium 14 k gold plated nib which i've read is a 3rd or below tier nib from the 50's) I've conducted searches on the internet and here within this forum and cannot find information on the Mark Jay? Does anyone out here in penland have any insights? Is Mark Jay possibly a sub company of a more well known company? Any help is greatly appreciatd. Happy Monday