Thank you. I see on the list of Danish hallmarks that there are 3 Hans Jensens listed, 1 in Copenhagen 1899-1937, 2 in Aarhus (1937-1957 and 1957-1970). To which one or to which period do you thinks this pin belongs?
I don't have much information on the firm of Hans Jensen. Believe they were in Aarhus, Denmark for most of the 20th century. You're mark looks like late 20th century to me.
I can't tell from the picture, but does the brooch have a simple c-clasp or a roll-over safety clasp? A c-clasp would tend to indicate an older piece. Also, is there a guilloche pattern under the enamel? I would have thought that a piece with that kind of image would be older than late 1900s (just speculating, though).
It is a c-clasp. There is a guilloche pattern but it is so minute that I was unable to capture it in the photos, yet it is a rather large pin 4.7 cm (1.85") diameter. Thank you to all for your interest.