You should keep it since it has been in your family since the 1930s
That's why I've kept it all these years. But I've come to the place where the memories mean more than the stuff. We are thinning down (see my posts of multiple unfired guns and cases of ammo and accessories in the classifieds) in preparation for changes in lifestyle in the not too distant future.
"My grandfather told me that there are two kinds of people: those who work and those who take the credit. He also told me to try to be in the first group since there was much less competition."