Alan

I believe they are British Proof marks but really don't know. I would have to post a photo.

I purchased mine for $1100 second hand which I think was a good price. Cerainly cheaper than what I was looking at at the time. Mickey's prices might be the USA prices but an absolute steal here.

400NE

"If memory serves, Interarms offered a Mark X in .375, and also the Whitworth (built on the same action). Does yours say Whitworth on it somewhere, or does it say Mark X? Mine had Whitworth, Manchester on top of the receiver ring. "

It has Whitworth by itself in an oval ring on top of the receiver.

"Is the bottom of your bolt knob flat and checkered, or is it round? "

Flat and checkered.

"The cross-section of your fore-end is certainly different from the one I had and mine did have two cross bolts. There is something different about your bottom metal and your trigger is definitely of a different shape. Never saw a Whitworth with a fore-end mounted sling swivel before. All I've ever seen had barrel bands. Rusty just bought one that someone had removed the barrel band from and had moved the front swivel to the fore-end, but it originally had one. "

I wonder if Interarms sort of merged the Mark X and the Whitworth models towards the end of their run?"

This rifle was second hand so who knows? But I believe it is original. My understanding is there is considerable variation in "Whitworths" and they were cobbled up differently over time. Variation in quality too. The barrel thread on mine is atrocious AND the stock was made to fit. The bases have fixed the problem with a scope. With open sights no problem. Other than that it isn't too bad and better styled than many other rifles especially for the price. Feeding 300 gr RNs isn't as good as it should be and needs to be cleaned up. My trigger is light around 3 lbs but I have had no problems.