Ruby is actually a type of pistol-a simplified version of the 1903 Browning as stated. Made in Spain , used by France in WWI, but many were used after the war by other countries in Europe and French troops in the far east and North Africa.
Some were used in WWII, and much later.
The ones that worked evidently work just fine-Some were still in use by the Viet Cong.
Could the odd round be a Tokarev?
Keep all the parts together, along with your bill of sale or whatever paperwork you have, and keep the pistol as you found it (Don't chrome plate it, etc.)
I don't know what you have, but someone might.
They have been used around the world since 1916.
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