PLUS ULTRA

HI, I NEED SOME HELP ABOUT THIS GUN A FRIEND HAS. IT'S A GUN THAT WAS SUPPOSED TO BELONG TO A SPANISH AIR FORCE MEMBER WHO CRASHED CLOSE TO MEXICAN COASTS AROUND 1940'S ALONG WITH HIS CREW. THIS GUN IS IN VERY GOOD SHAPE, AND TO KEEP IT THAT SHAPE THIS FRIEND REMOVED THE SILVER GRIPS WHICH ARE CRAVED WITH THE SPANISH AIR FORCE EMBLEM.
THE GUN INFO IS:
SERIAL 19854
BRAND PLUS ULTRA
CALIBER 7.65


THIS FRIEND HAS THE GRIPS IN PERFECT SHAPE, AND TO BE MORE SPECIFIC ABOUT MY QUESTION, I WANT TO KNOW IF THIS GUN IS A REAL COLLECTIBLE SINCE I KNOW THE REMAININGS OF THAT CRASH WERE BOUGHT BY JACOBO ZABLUDOVSKY (VERY WELL KNOWN IN MEXICO) AT A VERY HIGH PRICE.
THANKS AGAIN...