Ed Kirkpatrick at Ed’s Contenders was kind enough to share the following info:
Type 1 barrels have the writing engraved on a single line - Type 2 barrels have the writing on 2 lines and a period after the n and h- both have a non-step flat lug.
Thanks to those of you who helped out earlier on the week..
That's good information. Is there a collectible preference for one over the other?