no not a 1E ,just field grade
with Ithaca the E means ejector ,with E guns when you break it open the shells are flung out of the barrels.
the field guns had extractors.
what separates the gun grade 1-7 and sousa grades
is simply the detail in checkering on the wood and receiver engravings as well as precious metals.
1s had upgraded barrels nicer checkering
2-3 had slightly more checkering and a bit more engraving and beavertail forend options
4's lack full receiver engravings , had fleur de lis checkering on grip but no checkering on the stock cheeks and no barrel engravings, no gold
heres a 5E
theres 75% receiver engraving, a gold pheasant, checkered stock cheeks ,more extensive fleur de lis , but no barrel engraving.
full engraving ,light barrel engraving, gold ducks, fleur de lis on stock cheeks and extended off grip
as you go though each grade the design of the receiver engraving as well as the scene also changes along with the fleur de lis checkering getting more extensive