It looks kind of like a tin top also. I didn't think Ideal was that early. The trip to Knoxville from Chicago, even though down river is odd as well.
I need me some more learning on dairy.
found this 1912 catolog from the ideal creamery and packaging co. chicago ill, this is amazing check it out, also check out pages 204 and 207 very nice http://books.google.com/books?id=zi0xAQAAMAAJ&pg=PA95&lpg=PA95&dq=ideal+creamery+package+mfg+co.&source=bl&ots=sylnx0OPZ1&sig=qPBAiAm_zqgMhFcvaFq9sO1OnZ0&hl=en&sa=X&ei=Ydw7UZ7FHYjG9gTfloBo&sqi=2&ved=0CDsQ6AEwAg#v=onepage&q=ideal%20creamery%20package%20mfg%20co.&f=false