Obaks are great cards!
1. Not that I'm aware of, I know some players are only found with say the tougher backs like "Just So" players like Kusel etc.
2. 150's are very tough I spent a lot of time and had to even buy a fellow collector out of his progress to finish the full 150 set. I would say they are equal to the 1909's if not a bit tougher in my experience.
3. Not sure....
4. I know of one of each set along with handful uncut panels and strips.
5. Not much new, but quite a bit is known already. I will say T212 hasn't been torn apart and broken down to the degrees of say T206. It could be done but to date I' haven't seen any real new info or thoughts on T212.
Here are my 4 Obak sets.
1909 Obak Set.
http://imageevent.com/piojohn3/colle...s/1909t212obak
1910 Obak "150" Set
http://imageevent.com/piojohn3/colle...bak150subjects
1910 Obak "175" Set
http://imageevent.com/piojohn3/colle...1910obak175set
1911 Obak Set
http://imageevent.com/piojohn3/colle...ksets/1911obak
Glad to see an Obak thread...how could you go wrong talking about this great set.
Cheers,
John