I did find a Jeffery 475#2 Nitro at Champlin's booth at the Dallas Safari club show.

Please not Leonard 4 digit number and steel barrels

George Caswell has promised to send me copies of all the Jeffery records in his possession. I will post as many if not all when I get them and will try to have an emailable file to be able to send to those who want it.

While at the show I spoke with a gentleman via phone in North Carolina who owned a Jeffery 475#2 Jeffery made in 1927. His rifle also possesed the Leonard 4 digit number. He has promised to send me pictures and I will post those when they arrive to me.

Here is a link to some of the pictures I took at the Dallas Safari Club Convention this past weekend.
Dallas Safari Club post on AR.

Best regards,