Need assistance identifying Winchester M70 .375 H&H
I recently bought a used Winchester M70 .375 H&H in excellent condition. It is a post '64 controlled round feed rifle with a 24" barrel marked "Super Express". The floorplate is marked "Custom Express". Serial # is G1XXX. The stock is very nicely figured and is oil finished in a reddish tone. There is a rosewood forend tip and the checkering is very nicely done by hand in a wraparound configuration. There is an island 3 blade express rear sight with a hooded barrel band front and the front sling swivel is a barrel band as well, with a Howell type rear swivel. The workmanship is excellent in every respect. The bolt and follower are jewelled and the action is super slick with a crisp 3.5 lb trigger. There are two cross bolts and it is glass bedded. The metal is finished in a matte blue. magazine capacity is 3 rounds and it shoots quite well, with perfect reliability and excellent accuracy. The rifle is definitely a "keeper".
The rifle came with an EAW claw mount and an older model Swarovski 1.5-6x42 30mm scope.
The rifle was on consignment in a local gun shop and they had little information about the it, other than advising the stock is from Winchester as well. It is a classic express rifle and perfectly executed in every detail, with a high level of fit and finish. I bought it for a ridiculously low price.
Can anyone identify this rifle? Is it from the Winchester Custom Shop? Approximately what is it's age and value?
Thanks in advance for your input and expertise.