I received the item today...the case only had some fangus dirt on it, wipe it clean with a towel.
The scale number is:
according to this chart: Marc's Projekte Homepage - it would make this a 1940-1941 manufac. date. (?)
I think that maybe then the WaA code ( I need something to enlarge it, my eyes are shot ) is probably not fake...
Nice item either way!
Here's a quick photo I took when it arrived: