All matching 1943 Savage with unit disk

[MilitaryTorch]

I just got this rifle and it is my only Enfield at the moment.
I don't know anything about Enfields but when I picked it up I knew I had to have it.

I am curious if anybody knows what the unit disk is. It has BA 135 and the buttplate also has number 135.
It has no import marks and I am wondering if it ever left the country.
Does it look to be all original as it left the factory?

I am here to learn so all of your comments are very welcome.

Thanks

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