A good match, perhaps from the Zürich area...

[nablator]

the "cz" ligature, pop up pretty frequently. For example, see the fifth line here: You are not allowed to view links. Register or Login to view.

This "cz" is actually a "cꝫ", the "ꝫ" abbreviates "-et", "-est", "-ed" after a consonant (or "-us", sometimes, instead of the more usual ꝰ) , "-m" after a vowel. There is also "qꝫ" = "-que". You are not allowed to view links. Register or Login to view.

f. 1r line 5 "ſcꝫ" is "scilicet".
f. 2v line 7 "graꝫ" is "gratiam"
f. 2v line 8 and 9: "ſꝫ" is "sed"