call cdow at 303-297-1192 you may be on hold for 5 or 10 minutes but you can get it from the horses mouth. here is left over list I just bought one for area 3,4,5, 301,441,(cow)
that 15th to 19th season is 4th season not the late season
you can get them online or call cdow.
I think the code for 3rd season unlimited bull tags is
E-M-000-U3-R (Nov 4th-10th) there is not 4th season unlimited bull tags)
But call dow and talk to them and by a leftover tag (cow tag 4th season while supplies last, you need to know what area you are hunting to see if ther is any tags for that area avalible) while
you have them on the phone.