Well you are back to same point as with the 1 cent green

There are 3 major groups, Flat plate printed, Rotary printed , and Offset printed. The first two have visible bumps or line of ink raised above the paper, the offset is more like a modern flat print. But the one you show looks like the engraved, so eliminate the offset for these.
First step is to see if they are Flat printed or Rotary printed. If they are 22 1/2 mm or longer they are rotary, 22 1/4 or shorter they are flat.
Since you have so many, you might use the template method mentioned here
http://www.1847usa.com/washfrank/pr...gmethods.htmabout half way down the page. It says to cut a damaged stamp and use as a comparison with the 200 to separate them, otherwise you have to measure each.
( I might make a set of "templates" to take to shows with me, myself)
Once they are separated into "rotary" and "flat" then
go here
http://www.1847usa.com/washfrank/de...3/d32p11.htmand this should tell you what you have. Write the number gently on the back with a pencil so you won't get them confused later. There are more choices than the green. We will help as you go along if there are questions. If you master this art, it will pay off in the long run as you have chances to buy the scarce stamp when offered as a common.
Jim
Jim