I'm sorry I can't download a picture of this bowl. It is white with a navy and maroon stripe around the inside lip. It has a round decal inside with a ship which is encircled with writing and dates. Tabor Academy 1916 1876 All-A-Taut-O. I'd like to know if it's worth anything over and above the sentimental value.
I put together a little personal website to show them all http://home.wi.rr.com/steveschmidt/ -- they are not ambrotypes or lanternslides --- i think transparencies -- just predating autochromes , old west and mexico , yosemite, yellowstone .. any information would be helpful please see the site