Hi there!
I was hoping someone could help me with the ID of this stamp. I've been using this (Swedish link)
http://www.frimarksauktioner.se/185...ntyp%20I.pdf , but I only managed to narrow it down a little bit... I have no clue how to know if it's thin or medium-thick paper and which colour.
My guess so far is that it's a H2.. That's Pale blue with thin background and medium-thick paper.
Scan

Quite poor quality and it has been hinged.
Glad for any help.