I came across a box - unopened - of Kodak Plates(Glass) 5x4 inch with 12 plates. The type is P2000 Press Special.
Apart from a code on the side - AK156 98 - (this could be an emulsion batch number as with modern large format films).
To date the Kodak web site has not given me any idea as to when this box of plates was manufactured.
Could anyone suggest a route to take to find out manufacturing periods. I see that Kodak started producing roll film around 1913 but presumably were still producing glass plates well beyond that time.
Thank you in advance.