This collection counts 11 from 12 prints that became known to this day. The snowy tree print has a different seal: I.K. and may well be a work from the period before her marriage with Hugo Amberg. All other prints are sealed IKA. It was found in Hamburg and is showing one of the small ponds of the Alster basin. 

This example of a large spring bouquet was send to me by an American collector. Another copy was never seen. The same goes for the winter Alster print which is probably extremely rare.