Yar: By coincidence my local gun/pawn shop has one of these for sale - it is in mint condition and the consignment price is $1,200.00.
I will venture back there today and try to ascertain exactly which of the more current (more current than "pre-64"!) models this Model 70 is.
Good luck in your quest.
Hold into the wind
The rifle is worth about $900. The consignment fee is usually 20% of sale price so the asking price from standpoint of the seller is reasonable.
On Accurate Reloading Big Bore forums there are rumors of Czeska Zbrojowka 550 Magnum being discontinued if true it might be worthwhile to get the Magnum receiver big-bore rifle instead of Winchester. Naturally such large action needs something larger than .375H&H. The .416 Rigby or .458 Lott comes to mind.