This is a great collection!
There should be more than 750 different here, something like 752
Lots of topical appeal here
Please note that the stamps you see in the pictures ARE what you will receive. These are pictures of the one of the 750 different packets. Note that all the packets have the same stamps in them you will get all the stamps you see here
Sometimes though, the stamps were issued with labels. In some packets the stamps will have labels, in some they won't because the way they were issued, every stamp in a sheet does not have a label, so some packets will have stamps with the labels, some won't. I tried to find a packet for the pictures that had the lower number of labels but it is possible that your particular packet may have stamps that don't have the labels attached. All of the actual stamps will be present, it is only the labels that might vary.