Eddystone Barrel Date Question

[GSM44]

So there I am, it's 1918 and I'm screwing barrels into receivers just as fast as I can. There's a war on, don't cha know?

So I grab the next one out of the stack and fit it just as fast as the machine will let me.

Date on barrel? Number on receiver? I dunno. Who cares anyway? They've all passed inspection.

Collectors worried about matching in a century's time, when I'm long gone?

Give me a break, this is a factory and I've got work to do!

That sounds about right as to what the "factory" worker may have been thinking back in 1918, however, not relative to the question in my original post.
I was simply asking what other, more knowledgeable forum members thoughts were regarding originality of barrel to receiver on my rifle based on manufacture dates.
I appreciate the above members who posted helpful responses to my question.