Looks a bit Norwegian. The fineness 13¼ lot was used in Norway from around 1820--> In the town of Horten was a master active ~1820-1858 punching IT. is name was Johannes Svendsen Thom, but is it him....? Would have been easier if we had the town mark, but we haven't. Could be Denmark too (Johannes Jensen Thygesen in Stege..?), but the fineness indicates more Norway. (I don't think it is Denmark) Let's, anyway, wait for other opinions...