That period is a bit earlier than my area of interest but have you looked at Academia.EDU for studies on minting techniques. As I recall there were a series on Danish mint history. I only saved one of the papers which dealt with Denmark in the nineteenth century. I looked up the title and author of the paper I saved. Hope it helps.
THE TRANSFER OF MINTING TECHNIQUES TO
DENMARK IN THE NINETEENTH CENTURY
MICHAEL MÄRCHER
That site contains a world of information in one place that is not available elsewhere - on a scholarly but very readable level so that anyone can enjoy reading. I spend most of my reading time there improving my understanding of the history of industrialization and refining so that I can authenticate coins more easily and with scientific accuracy.