Found these in my late Father's huge stamp collection. Has 30 full stamp sheets in the file. Most are back to back. But they aren't stuck together. I took them all out for the group photos. 

I am not a stamp collector and not an expert. But the condition is probably as good as you can get for 80 year old mint stamps? This is just one file folder filled with full stamp sheets. Will list others if this auction goes well.

Cheers!