Came across this stamp Norway Scott #28. On this issue numerals in the middle and Norway have embossed feel to it, they actually leave impression on the foil. I don't have any stamps from this 1877-78 issue, I only have ones from 1882-93 issue, and these do not have this embossed feeling to them. So, is it normal for 1877-78 issue to be embossed?
Another thing I noticed, is that O and R in Norway as well letters on the bottom, have 3D appearance to them, like double print, or something like that, or maybe it's just me going nuts

