Photoshop may be too harsh a term.  I suspect it is what I call an “advertising print”.  Somewhere in my collection I have a photo of a string of Boston & Maine boxcars lettered “B&M Baked Beans Boston, Mass.” in white lettering across the boxcars.  The lettering looks like white-out, but I am sure back in the 20’s-40’s there was some other lettering medium used.  The lettered photo would have been for use in a print ad or brochure to publicize either Oscar Mayer, or Oscar Mayers’ use of that manufacturers’ freight car, or perhaps even a new plant opening.

If it’s the “original” lettered print, the white lettering will be like white-out, and I suspect it would be cracked with age.  This is probably a duplicate print of the original hand-lettered photo. Having an original white-lettered photo is a little cool, having a duplicate maybe not so much – my opinion only.

Stay healthy,

Peter Ness