Cool Firearm Find During Flood Clean Up at Grandfather's House

During the flood cleanup this weekend at my grandfather house, we came across this Beistegui Bros 38 Long revolver. I still need to sit down and get the whole story from my grandfather himself. He owned a furniture store for many years on N. Foster in Baton Rouge. I was told that approximately 40 years ago, a man walked into the store needing money and sold my grandfather this gun for $20. My grandfather then proceeded to keep it loaded and use it as protection in his store from then on.

From what I can tell after a little googling, these were made in Spain between the years 1920 and 1936. It doesn't appear to be worth much, but will make a cool wall hanger for me with a little family history behind it. Looking forward to the full story from my grandfather.

Any gun experts on here know anything else about them?