I can not get the mounting spot png to open. But I am guessing, if it on the left side, near the rear of the receiver, it is where you could mount a Marble or Lyman style rear peep style sight.
A Remington rear sight fit this angled mounting base, so that it was level when mounted. Others made sights for it, but don't believe any fit on the factory supplied block in the pic. Redfield made a special sight base that allowed use of their better sights, Olympic, International, & Palma.I can not get the mounting spot png to open. But I am guessing, if it on the left side, near the rear of the receiver, it is where you could mount a Marble or Lyman style rear peep style sight.
That was Art Cook at the 1948 London games. I think this was the last Olympic English match to be split between 50 and 100yds.A young American kid won the Olympics with one in the 40s or 50s. I think the rifle is in an NRA museum.
The short "scope block" rear mount was used on earlier Remington 37s and later a longer more traditional side mounting block was used. What is the serial number of your rifle, there is a 37 #sn database on Rimfire Central..Extremely nice target rifles. Model 37's had extremely smooth actions, at least the several I had and shot did.
Magazines are hard to find and pricey when you do find them, single shot adapters more so.
Vaver made a very nice aperture sight for them. Unique in the fact that the adjustments were a rack and pinion gear set up as opposed to traditional screw thread adjustments.
The mention of Art Cook is heart warming. He and his wife were still competing at the Camp Perry small bore nationals in the 90's when our daughter shot in them. He would sign the range commands to her (his wife) since she was deaf.
In my very humble opinion the 37 had a slight edge on the 52 Winny but you know the old saying about opinions!