I feel the same as Gaspare. It looks OK to me, but I am far from an expert on visor caps. It does look like it has been heavily washed, or otherwise cleaned, which is no problem as to authenticity. It is difficult to tell if the outer dark green band is wool or velvet. Wool was used on NCO/EM caps, velvet on officer types. But, it was not unusual for an NCO to be promoted to officer, retain his old cap and add officer trappings to it. As to the piping, it does look odd. There was a regulation, if memory serves, that the size of the piping must be the same diameter throughout. It appears in the photo the upper (crown) piping is noticeably larger than the lower piping, But, again, I have seen supposedly authentic examples with this anomaly. The puckering could be a result of the cleaning process. It looks like someone put it in a washing machine. I would not call this cap a "textbook" example. It does not appear to conform with the standard German manufactured caps. But (again), this maker was used by many known makers and usually for substandard caps. It is something of a "generic" label, for lack of a better word. Of course, if the piping is gold, as it appears to be, it would designate a general officer. The maker shield appears to be celluloid, which is correct, but not necessarily a sign of authenticity. Caps and uniforms of the period were not all manufactured in Germany. Some were made in occupied countries, such as France, and Italy, a German ally, also produced German examples. This can account for slight variations, anomalies and quality in standard uniform wear. The problem with this cap is some collectors will always doubt its authenticity and that could be a problem when it comes time to sell it. Since it is not "textbook," I would not pay a great deal for it.