4seventy,
Yes, the hood simply slips off from the upright position. Must be easy to lose judging by the number of Jeffs missing them...

I need to look at more Jeff bolt guns, but I don't think I have seen one with the rear bridge taken down on the left (bolt release) side like this one has. Not sure if that serves any real purpose.

Also, regardless of what Dorleac says, the address is rolled on which was clearly common on Jeffery rifles of any grade.

EDIT: Upon closer looking, the address on this gun looks to be much deeper than on my 333 Jeffery which has an original finish, so I think mine is about as deep as the day it was struck.
There also looks to be a "stippled" texture in the bottoms of the characters.
Perhaps the stamping was chased with an engraver at some point