In regards to the question, I think the answer is an exacting and definitive "fuzzy maybe".
For example, model 1911 Colt .45s are large and by pistol standards, have distinctive looks. They have also seen a certain amount of movie and book time for both historical reasons and because they are powerful and recognizable.
"Colt .45s" thus make an ideal movie fire arm for both bad guys and good guys. Going into the video era, they might be featured in "shoot'em up" video games for the same reasons.
Then factor in the background of the witness. Is the witness somebody with a passing interest in fire arms? Is he a fire arms enthusiast? An action movie buff or a video gamer?
Any one of these possibilities could increase the possibility of somebody recognizing the historical pistol at a glance. But.... the weapon's movie fame could contribute to it being described in a "Bad guys always have bad a-- guns. So, yes, these sociopathic bad guys had a silver Colt .45" context.
Moving from movies and video games, I dont know how many of these pistols are in circulation in Greece. Even in America, though specialty manufacturers continue to produce them, there are just not that many being made anymore.