I have now been able to acquire a precision portal clock with Amant escapement, grid compensation pendulum (real, not fake), center second and striking on 2 bells . Some special features are marked in this photo. In particular special seems to be the microregulator between the two anchor halfs; only the very best have this. The dial (full white emamel in mint condition) is not signed. As soon as I have taken good photos, I will submit them.