Did it switch from slovenska to slovensko or vice versa i noticed the difference on this
I noticed the difference on this 100 no denomination or perforation stamp it ends with slovenska not sko, was ska first then changed to sko?

Comments
I think most folks on these forums have better things to do with their time rather then being "kept on their toes" As Carol suggested in another forum post then a little research with some Scott catalogs on your part would answer most of your questions.
Mike
https://www.hipstamp.com/store/wilton-philatelics