https://en.numista.com/catalogue/pieces78794.html
But even in Krause there are 4 types:

(h) — emblem of helmet in reverse (mintmaster Heinrich Jager)
(d) — emblem of dog in reverse (mintmaster Marsilius Philipson)
no mark — emblem of heart

There are also 3 types of legend in reverse (mentined in the page) for 1648, but I'm not sure how/if it corresponds with Krause types, based on mintmaster marks.