Both of these plaques are 1/4" plywood 16"x11" approx.
The window cards are approx 14"x9.5" each and appear to be glued to the stained wood face, and sealed with a clear protection.

The Ask Alexander card is mounted to the brown stained board.
There are three 1/4" chips on the front, which may have been caused by someone past, throwing darts at it. At close inspection, one can see about a dozen pin holes, none of which penetrate the wooden board, but leave evidence of a sharp pointed object such as a dart hitting it. The bottom right corner has the name AV YAGA BOMBAY
The lithographer was Av Yaga Bombay.
NOTE: This appears to be just a copy of an original, as there is no color obvious on this print.

The David Devant card is mounted to the black stained board and in very good shape. In the bottom right area is the name 'Will Owen' and in the bottom corner is the stamp of the printing company...
STAFFORD & CO LTD Netherfield NOTTS No.5420

Both of the above poster reproductions would look great in frames. the mounting boards could be trimmed as necessary, allowing the entire print to be visible.