Your pistol was made by Esperanza y Unceta (Astra) prior to WWI, in the era from 1911 to 1914. The monogram emblem you see is a fancy "EU" - also, the "Hope" trademark is the English translation of "Esperanza". These were manufactured in the Eibar region of Spain.
As to the holster, vet bring back story, etc. - who knows? Many of the Spanish handguns of this era ended up in France during WWI, and resurfaced for use in WWII.