Posted By:
barrysloateRhys- I had several emails with the seller during the day to try and determine whether it was an ambro or a tin. While he responded quickly he was not very helpful. I originally thought it was a tintype, but what looks like tin from the back may actually be dark glass. It's hard to tell both from the scans and from his emails.
What knocked me out in the end was the condition. Way too many problems, and if it is an ambro that glass looks like it is pretty close to cracking. But I have to say either way it was a really superb early image.