It is ME109E, so must be either pre or early war period
I have recently bought a ‘repro’ copy of the execute signal. After reading the various posts and the article. I will have to have a quick look.
I have a Navigational Computer IIID*, written inside is P/O Willhouby 464 Sqdn. 464 Sqdn, as well as being RCAF, also supplied crews for the Ameins Raid and was disbanded in 1945.