Boy thats a Lovely looking Gun mate.
I sure woulda bought it .I'm no expert , just like that maker.
As above, Bob could likely help you out, but looks to be at least a mid/upper grade sideplate job...#30 perhaps? lovely fences.
Is it marked VL &D on the outside of bbls?
There might be a script alphabet mark on the flats?.....(not the one with a star on top, that was , I believe the proof viewers personal mark) a cursive "e"was 1926 or 29, I forget, I had a couple of VL&D 20 & 25's.
Don't know how much a new whole fore end might cost , but surely that gun is worth three grand + complete?
I could not have not bought it, just cause its gorgouse...nice one...I really hope you can find , or get a forend made for a decent price...lovely gun
good luck
franc otte