Zweihander or two handed sword-help needed

[serdar]

Helo, i aquired new sword for my collection, german origin zweihander, usual i know very well what i aquire but this was lightning from the sky, so if some one has greater knowlodge in identifying it it would be great.
It is 171cm lond, 3,6 kg heavy, and to me it feals and handles like original, great balance, distal taper, looks genuine to me.
Pattina is good, crossguard very nice.
It has a makers mark or town mark on blade and some on leather.
Any argumented coments are welkom.