Picked up this barrel in an auction lot.

20" in length

Integral front sight with blade still present.
Lug for take down latch still mounted.
Rear sight replaced with a Stith blank

What may be the s/n is stamped by by the locking slot under the chamber: 141 403N

Bore looks good. Bluing is VERY good, but some 'fading' of lettering on barrel leads me to think it might be reblued.

Any information or valuation would be greatly appreciated.