"The Good Shepherd" gaffe

We saw "The Good Shepherd" a couple of nights ago and, like most people I'm sure, appreciated the fact that the film's Prop Master decided to showcase a Urei 565 "Little Dipper" in one key scene (which was very reminicent of the "audio decoding" scene in "Sneakers," I might add).

If you haven't seen it yet, in "The Good Shepherd," CIA agents are doing their best to clean up a particularly muddy reel of 1/4" tape, and, by using a 565, are able to notch out extraneous noise and narrow in on and identify, say, the ceiling fan whirring behind the dialog, or the distant jet engine masked by nearby church bell clamour. All very exciting stuff, and, more importantly, somewhat accurate. This it what the 565 was designed for-- ultra narrow Q notch filtering. Identifying a particular frequency and removing it. Etc.

Unfortunately, the scene in question was set in 1961, nine years before the 565 was released. I know, I know: movies are illusions, the 565 was just a prop so what does it matter, creative license, blah blah blah. Still, it's fun to imagine some gear snob boom operator complaining about it on set ("Come on, guys. Can't we use a PEQ-2?")