Dating Kodachrome Stock in Glass Mounts

[Meyer Trioplan]

I figured this or the collecting forum was about the only place to put this question, so hopefully it is well suited here.

A couple of days ago, I picked up a small box of 50 great glass mounted slides in a box marked "Miniature Slides" off of an online auction. Looking at the back surface of the slides in light, they seem to have that frosted etched look distinctive to Kodachrome type films, but since they are mounted in glass, there is no way of knowing for certain without disassembling a sample mount.

The images definitely date from the 1940's, but I am curious of the following...
*if they are indeed Kodachrome
*if they are original shots or duplicates, and
*if they are Kodachrome originals, around what exact year were they taken.

I've done some searches that indicate that Kodachrome Motion Picture stock has date coding in the edges, but is there any such "coding" in the still photo stock? If not, it pretty much defeats much of any purpose for taking a mount apart to see what I've got, aside from maybe seeing if it is duplication film of some sort. The only reasons I *might* suspect they might be duplicates is that the subjects are all very signature in nature, and a few seem to show some vignetting, high contrast, and a sort of "not quite perfectly focused film plane" appearance around the edges.

Any thoughts? A couple of images are attached to the thread...

 

[bdial]

With that sort of color fidelity it's a virtual certainty that they are Kodachrome (at least IMHO).
They could be purchased "tourist" slides, but it if they were, I'd think the labels would be printed, at least that is the case for the ones I've seen.
Given that they are labeled and logged, they could well have been professionally done, and any that were "not quite perfectly focused" hit the bin long ago.

 

[AgX]

Where is the glass?

Are the panes laid into the cardboord frame? Hard to imagine.

European glass-framed slides are two full size panes lined by a tape.

 

[Meyer Trioplan]

Where is the glass?

Are the panes laid into the cardboord frame? Hard to imagine.

European glass-framed slides are two full size panes lined by a tape.

Yup, they are a sort of blend of cardboard and glass with a thin glass sheet on both sides of the film. I think they are called SVE Slide Binders. I have some of the plate glass slides with tape lining as well.

 

[AgX]

Yes, after some contemplating I see that my remark was quite stupid, but your "glass framed" somehow made me think of those full-size plates and then completely led me astray.


For best dating you would have to open one or two slides.