you are new,lol
i already have them packed up, but here is a short description.
the ones with the black boxes are 90s models (303-309) very collectible.
the ones in the yellow boxes (301-305) are newer production, no matter about that they are all made in USA and very good quality! you can do a search on the numbers and see the blade lenghts etc. these are great deals on these fine knives for sure.
the yellow handle 309 is somewhat rare handle and though certainly not obsolete. The handles on all of them are what Buck calls valox or a delrin if you will. very durable!