Hi blugill, looking at the tail and the width of the shoulder the helje resembles the MK-23. The strange part is the location of the "No 23"(on the tail) and the K&B Extra logo on the back of the tang. But mine has jimps on the bottom of the tang and the size of the No 23, wierd weird.
It appears that K&B was a pharmacy in the US between 1905 and 1997(
K&B - Wikipedia, the free encyclopedia), so a razor with a shop logo isn't a stretch. However, how did a Swedish razor for the US market end up in The Netherlands........