I have interpreted these as Sc#447 Perforate 10 vertically and assuming fakes.
please offer your opinion, and if fake what do I look for?
No discernible Wmk shows
Width of design, best I can see, and estimate is 19.5mm for both.
.....and can see maybe Sc#496 issues.

Reading stampsmarter
https://www.stampsmarter.org/1847us...p10coil.html
