The ID plate was installed on each and every motor ever built, so if they’re missing, its because they’ve been purposely removed for whatever reason.
WRT the background colour, the earlier Elto’s had a black background. Later it was changed to a blue background, I think in 1924.
Hope this helps,
PM T2
He's livin' in his own private Idaho..... I hope to go out quietly in my sleep, like my grand-dad did..... and not screaming, like the passengers in his car...
