Framus 5/52 Atlantis Zenith No. 17 Archtop Acoustic Guitar
1950's made in Germany.
The label in the sound hole is gone, but I am pretty certain this is a Framus 5/52, probably 1959.
It's in good overall condition considering this is now a 65 year old instrument. The neck is straight, the action is medium/high towards the 12th fret, that's due to the bridge being set slightly high, a bit of sanding down on the bridge would optimise the string action, but it still plays well and is useable as it is. I believe the bridge is not the original one and must have been replaced at some point.