Larger lower one is a gear drive saw,slower rpm's but much more torque,pretty much unstoppable.Guessing early to late 60's & 80cc or 87cc depending on exact model/years it was produced. Turn it over,look at that ''T'' shaped section on the crankcase,there should be a number on left side,that's where model number number is normally stamped.On right side is usually another set of numbers,that is usually the part number of the block. Top smaller saw looks like its one of the venerable 10 series from mid 70's or so,either 54 or 57cc.What does it say on that air filter cover label? That's a good place to start,before you pull the muffler & measure the piston diameter to determine exactly what displacement is. Box of parts - that recoil starter fits most all of the 54,57,70.5 & 82cc 10 series from the late 60's to early 80's.No idea about the other parts.
