help on some old german money

I have gotten some 2,000,000 mark packets. They have the original 1923 bank
band. They are circulated 100,000 notes from 1923. They have a blue band
that says they are from Berlin, 1923, and have two handwritten signatures.

I also have some 1,000,000,000 mark certificates that are eight small coupon
sized notes with successive dates on them, from 1924 to 1928, I am guessing
for redemption on maturation. At the bottom is a full 1/3 sheet certificate
for one billion marks from Berlin 1923.

Help in identifying these and valuing them appreciated. Can send pics.

Steve