The English language story illustration at INDUCKS includes three more introductory frames with Mickey and Minnie Mouse.
INDUCKS says KF 6-5-6 7/67 which is consistent with King Features, but it looks more like an M.
Bound into the center of the book between pages 18 and 19.
The pieces will appear in issues 39/1972 through 45/1972.
The inner margin of page 3 says "Bilaga medföljer." (Appendix included)
This is a fold-in integral extension of the back cover, about half size. One side has instructions and the other side has the puzzle pieces to be cut out and pasted onto the backing sheet. This is the first installment of pieces, to be continued through issue 45/1972.