BNewtopP I have a N Porter saddle that I acquired in 1974 from a friend. The stamp is 552 and I would appreciate greatly if u could tell me anything about it? My email is ssmith4728@gmail.com since I’m not a member of this blog. I have been trying for years and years to find out more about the saddle. I hope you can help. Thank you in advance. S Smith. Email is ssmithn4728@gmail.com I forgot the n before the numbers in the above address.