Looking at the two words in the centre, the first of those two words appears to begin with āOā and the last letter could only be āyā or āgā. The penultimate letter has a dot above it, so I would assume itās āiā, which would mean the last letter is most likely 'g'. It couldnāt be a German Christian name with that combination and, since thereās a full stop after it, I would think itās an abbreviationā¦ possibly āOrig.ā for āOriginellā (meaning āoriginalā).
The second of those words looks to begin with āRā and end ālā with three letters in between. My guess is that it might say āReralā (meaning ārealā). So the two words together might then be an indication that this is an original work, as opposed to a copy of an earlier engraving or a mass-produced print, although that would be an unconventional way of saying so.
The other words I canāt make out, but the general style of the handwriting suggests it's not very old. I would think certainly post-war and probably rather more recent than that.
Looks like it has taken more than a bit of inspiration from an etching by the German artist Hans Klemke (b.1892-d.1960). Yours at the top and Klemkeās below:
The architectural detailing has a lighter touch on yours, also with differences in the foreground figures and the sky but the aspect and perspective for the buildings look to be identical. Obviously, if you sat in exactly the same place to make your sketch youād get the same view, but it looks to be too good a match for that kind of coincidence.