WW2 Flak Bier Krug

[AlecH]

Hello,
Bought this at the Saturday flea-market - WW2 German Flak Beer Jug from 1st Company Reserve Flak Abteilung 342 unit (1./ Res Flak 342) with "Die Wache am Rhein" motif, unfortunately the last two year digits are missing from the transfer does anyone have an idea which year ? I think the motif was a common one.
Cheers