There are supposed to be 600 different stamps. This package maker was very specialized. He counted the following as different (so you will not get anywhere near 600 face different stamps):

If a stamp comes as a booklet stamp, he included multiple booklet positions, usually no more than 3 positions (top imperf, bottom imperf and corners imperf for example)

If a stamp has known paper fluorescence varieties he included them, in some issues like the Wilding, Cameo and Centennial issues there may be several flourescence variations

Stamps with no tagging, Winnipeg tagging and/or Ottawa tagging may be included

Precancelled stamps are counted as different from a regular stamp

Modern coil self adhesive stamps have various perforation varieties, different perforation varieties would all be counted as different too

It is possible that there are also the odd actual duplicates, a result of human error

As with any packet this size, please expect some mixed condition

Please note that the stamps you see in the pictures represent the stamps that you will receive. They are pictures of one of the lots, all of the lots have the same stamps in them so the stamps you will receive will have different cancels etc.