These are generally in bundles of 100. The collector grouped like bundles together. All bundles are of the same stamp.
There should be some extra stamps here.
There is of course very very heavy duplication and as always with large groups there will be mixed condition as well.
Generally bundle makers are not checking for varieties etc and it appears that these bundles were accumulated from multiple sources based on bundle making styles.
There are about (rounded down) 24,750 commemoratives, 5,500 definitives and 11,250 Christmas stamps.
The pictures are the actual stamps in this lot
APS, CSDA, RPSC, & BNAPS member