I should have worded it differently,note the flur de lis at each end of the checkering on the stock and forearm.
From the pictures it looks like the gun has been re-stocked. That would account for the red grip cap. also notice the difference between the stock and forearm.
IMO re-stocking isn't a big deal. However, to a collector that will lower the value. That said, most collectors look for the prewar models.
IMO what you have is a really nice 70s model 37. Have a good time shooting it.