How was the pedigree substantiated ?
The original page from Pat Herst's sales book came with the set...
...and on the back of the sales page are three Herst cinderallas, like this one:
are they graded ?
They are all VF, some are close to XF (like the 12c). Except the 1c Franklin. This one is cut way too close for my taste. The dealer agreed with me and is looking for a better one for me to upgrade my set. The top of the 24c is not great, but I can live with it. The colors are bright on all the stamps and the impressions are very clean and sharp.
(They are not professionally certified and graded.)