It may be a sjælden Politibetjent Wappen.
I think only a true Dane would use the name Holgerdanske. It's quite a legend and one I'm proud of. Goddag Holger, and welcome to the forum.
I have family in Holbæk and have visited the castle in Helsingør several times.
Skøl! (as our friend K-B would say)
Chas.