G'day again Uncle Jaque,Sorry ... I didn't read the bit that gave the dating.
BTW: Wasn't the '06 an earlier Mauser style rifle? The "Enfield" design picked up by USA was the British P14, being made in USA for Britain, in (~) .276" or 7 mm. This was always a bit too hot for the ordnance steel of the day and the Yanks had the sense to rebore it for their .30" '06 round when they adopted it as the M17 (in 1917).
My Grandad (in both WWs) never though much of the P14 - burned out barrels if you tried to use it as a real battle rifle, the way the rifle #3, mk I* excelled ... and it had a bad tendency to jam through heat or grit.
Regards,
Bob Bolton