When I finally picked up my rifle from my FFL, I went over it carefully. I couldn't find any more markings on it, other than this. Under one of the scope blocks I found "No 1x27". The X digit was drilled through for the scope block.
Bolt body has "damascene"
Muzzle is tight..."0"- on the CMP gauge.
With this new information, I contacted Bob Beach, Griffin and Howe's historian, with this result...
"I regret that I have retired from doing the research and letters of provenance effective the end of 2018. There is a current G&H employee who intends to continue the service but it will take some time to rearrange his present responsibilities and familiarize him with the available documents.
A new Research email account has not yet been set up for him so I will continue to read and respond to inquiries. As you may know there are no original G&H& records prior to 1970 except for those rifles sold through Abercrombie & Fitch which owned G&H from 1930 until 1976 and sold many G&H rifles as both new and used guns. I checked all of the possible G&H serials numbers in the A&F records that were in the form 1x27 and there were four possibilities, but each does not seem to describe your rifle.
No. 1127 is built on a Winc. M54 action
No. 1627 has a 26 inch barrel
No. 1827 is a Winc. model 70 in .270 caliber
No. 1927 is in caliber 257 Roberts.
This suggests that your rifle could be:
No. 1027 built in 1930 – 31
No. 1227 built in 1933
No. 1327 built about 1933 - 34
No. 1427 built in 1935
No. 1527 built about 1936
or No. 1727 built in the early 1940’s
These dates are derived from the dates of near number G&H rifles sold at A&F and Michael Petroff’s research. I will check the files at G&H when I next get there which may not happen until November. G&H does have some paperwork for guns that were sent back for shop work post 1970 but these haven’t yet been put into the database that I can check. If I find anything more for you I’ll be sure to get back to you.
Thank you for the inquiry and enjoy owning this piece of undocumented history.
Regards,"