okay so I couldn't get a good pic, but here's the numbers I saw:
_________________
| 9 T 440 T E |
| 8 23 |
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EDIT: my "outline" didnt format right, basically I saw "9 T 440 T E" then "8 23"
There may have been more numbers, but those are the only ones I could find. They don't stamp those very deep.
Safe to assume by now it's a 440?