Hi Jdgarst0720,
These revenue stamps are listed in the Scott Specialized Catalogue for United States Stamps.
You should be able to get an older copy on
ebay for not too much money ($10 or so).
A five year old copy works just fine since the prices don't change that much from year to year for revenues.
The desirability of cancels is in this order
(least desirable to most desirable):
perforation or cut cancel
embossed cancel
pen cancel
rubber stamp cancel
printed cancel
SON and clearly readable rubber stamp or printed cancels are worth a premium.
Please try to post some pictures of your stamps.
Everyone enjoys seeing them.