The question is, oh great film gurus, when did Kodak stop using the Kodak name on 16mm release prints?
If it helps, which I doubt, the print has a density audio track.
I am suspecting it to be a 1952 print. It had no academy on the head or tails when I got it, and was on 4 reels. It runs 61 minutes, and has been on a 2300' reel since 1974.
The previous owner had a fetish for changeovers in 16mm. I dont. 
I'd like to be able to provide some history on the print before the show starts, if I can.
You are correct that the "square" and "plus" date code could be for either 1952 or 1972, as prior to 1982, they repeated on a twenty year cycle:
http://www.kodak.com/country/US/en/motion/support/h1/identification.shtml#code
Remember, the edgecode on a B&W print film will be black letters against a clear background. Edgecode printed through from the negative will be clear letters against a dark background.
I agree with your suspicion that the well worn 16 mm print is likely from 1952, owing to it's condition. As far as the Kodak name on the edge, that was usually the case, but someone may have left it off the "stencil" used to print the edgeprint during the slitting operation one year. An old variable density track negative could have been used, so that is no help in verifying the age of the print.
Of course, most current 35 mm print films from Kodak have much more complete edgeprinting, including full date information and batch number.
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John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services, Entertainment Imaging
Eastman Kodak Company
Research Labs, Building 69, Room 7419
Rochester, New York, 14650-1922 USA
Tel: 716-477-5325 Fax: 716-722-7243
E-Mail: john.pytlak@kodak.com
We all know that 16mm is toy-gauge, and nobody would seriously look at 16 for information
Thanks for your input. I want to be accurate with what I tell the viewers --right down to the duped footage with a new soundtrack that I had made in 1976--of a part of the film that broke every time that I ran it-- I'll just say that I suspect it to be a 1952 print with a short 1976 insert. The soundtrack on this ol' VD print is surprisingly decent with good bass and treble response. The re-recorded part is OK, too.
Thanks again!
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John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services, Entertainment Imaging
Eastman Kodak Company
Research Labs, Building 69, Room 7419
Rochester, New York, 14650-1922 USA
Tel: 716-477-5325 Fax: 716-722-7243
E-Mail: john.pytlak@kodak.com
quote:
I am running a 1947 black and white PRC feature

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Better Projection Pays!
The star is Darryl Hickman, and the lady coming to the convention is Noreen Nash. I hope that she doesn't go screamng out of the theatre when she sees the print. 
It will look really good. All the other films that are running will be on machines with halogen/tungsten lamps using internal speakers.
I'm using my xenon Eiki and a speaker below the 10' screen. The film has a great contrast that will really shine with that lamp. I ran it the other night just to see...
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Better Projection Pays!
The story is about people in a prison that are being sent to the electric chair. One is innocent. Unknown stars, but a fun little film. Leave it to PRC to leave no storyline untold!
The Asheville convention should be fun this year. The only reason they are running my film is because Miss Nash will be there. I've never worked with them before. I only have to drive 4 miles to get there, too!
Maybe I will meet some Film-Tech'ers there. I'll be the one that looks like an old geek.