I wonder if any of the photo collectors can help me. I'm trying to gauge the dating / period of the type of International News stamp that's on the below photograph:
http://www.ebay.com/itm/Babe-Ruth-19...item20c138680c
The reason for asking isn't specific to this photo (although I do like the image) but, rather, I've a number of photos of images from 1920 through to 1922 / 1923 that have similar stamps to this photo on their back.
In fact, one or two of these photos were purchased as PSA authenticated "Type 1" photos but I think that this type of stamp may date to a later period (probably 1930s). Am I correct?