It's a 1924 Featherweight that's been refinished. Doesn't have the Hunter Arms logo and NP for Nitro Proofing on the barrels water table.(started in the 20's) If you look at the next to last picture at the forend, the inside looks like the old varnish is alligatored.
I think $1,000 is a little high. If still interested I would ask the seller to measure the stock from the first trigger straight back to the end of the wood and see if it is around 13 5/8"-13 7/8" and that it hasn't been cut down. Then take off that ugly Pachmayr White Line recoil pad and put a replacement plastic buttplate on it.
If your brother is still interested at auction end, doubt if it will sell, call the seller and ask for a discount on the dent and the refinish job (bad on the metal)
30" barrels would make it nice and 32" would make it even nicer.