I have a Warrilow 12ga that has about the same amount of engraving than yours, mine has London Proofs and my gunsmith thinks it may have been a Belgian made action finished in England due to the use of pins instead of screws. Mine has a Greener crossbolt as does your but you have bushed pins which I do not. Mine has an Anson Deeley number, yours doesn't. The only thing I have ever found out about them is that Boothroyd seems to think they were made by CG Bonehill and yours certainly was. Mine however has no such mark so it seems to me Mr. James B. Warrilow of Chippingham, Wiltshire sourced his guns from more than one maker.
Yours is only the third or fourth I have heard of, one was a 20ga.
Yours looks to have been refinished, the bead is new and the bottom strap seems proud of the wood. The barrel length wouldn't bother me if there was still enough choke to suit my needs and the gun was sound. My barrels are 28" even and I had mine reproofed for 2-1/2" smokeless, the proof house told me they would pass it for 2-3/4" if I wanted but I passed on that.
It's about $1880 US not a great deal but not a bad one if the gun is sound and it fits you, plus it's a 16ga. Have the bores and walls measured though.
