Try these.
Second preproduction run after base detail added, but no sidelights.
3rd preproduction run, very small sidelights added.

Apologies for out of focus picture
1st production run with small sidelights (bigger than prepro above).
General production model with large sidelights.
The size (or lack) of sidelights is the easiest way to date the jags during the "Woodgrain" and developement period.