Hi, I just joined the Forum, I am recently retired and going to be going through my collection that I have had since I was a teenager. I have a large collection of Used US Blocks of four over 1000 all different, I was wondering if there is a pricing catalogue for used blocks. I find a few pricing listings for some of my very early issues in the Scott Catalog but it seems as you go further into the catalog there not showing prices.
You do not give any specifics about your blocks but I assume that most of them are the common stamps from the mid 20th century onwards? If so there is no premium assigned for blocks of those stamps with perhaps a few exceptions. Some more specificity would be helpful.
There is approx 300 blocks of four regular issues from the years 1900 through 1950, 400 regular and commemoratives 1950 though 2000. Then there is about 300 blocks of four of Stock transfers, documentary, revenue and postage dues from the early 1900's