How do you tell if an Old Judge has been rebacked?

[tbob]

Thanks Rhys, I appreciate the reply and information.
tbob

[E93]

WHat Rhys said. I just discovered one last week for the first time. What raised a red flag for me was exactly what Rhys mentioned - a crease/small crack on the front that did not have corresponding damage on the back. I then got out my black light and the area around the crack and all four edges fluoresced from the glue.
JimB

[fkw]

Like others said, many original OJs are warped or bowed slightly (because the real photo image side shrank slightly over last 125 years) sort of like the Kelloggs 3D cards.

Id look at the edges for age discoloration, if someone were to reback a card I would think they may need to slightly trim up the new back to fit the front exactly and the edges may look brighter that they should.

Thats card looks OK to me, some back edge age color and slight chipping but maybe compare it to another OJ would be good?

[tbob]

Thanks Jim and Frank. My pre-1900 card knowledge is limited so I appreciate all the help I can get