Can Someone Explain To Me "Full Step" Nickels?

Your reply was split into its own topic and moved to the appropriate forum for the proper attention.

Monticello's central steps are a measure of strike quality, with 6 visible steps being considered the optimal, and maximum possible that can be found. For the business strikes of some dates/mints there are no known 6-step examples, in which case 5 steps are usually treated as full steps.

Other factors influence the number of visible steps, including the state of the master hub, and the relief of the coin as expressed by the master, the state of the die (early or late), and other factors. The high relief and worn master that was common during the 1950s and 1960s means those decades are the ones during which full steps are rarer. Full steps are fairly common on the War Nickels of the 1940s because the special alloy was softer and easier to strike up.

During the late 1980s onward, the design's relief was periodically reduced, which on average yielded a better strike on the steps. From the mid-1990s onward, most nickels exhibit full steps, at least before the die wears down to late stage. Most proof Jeffersons of all years have full steps.

Nicks and cuts on the steps that happen after the strike do not change the quality of the strike, thus IMO do not disqualify that coin from being full step. Instead those nicks and cuts will, of course, lower that coin's grade.

I keep two sets of Jeffersons, a highest grade set, and an MS fullest step set. Some of the MS-62 full step coins are rarer and worth more than MS-67 non-full steps of the same date/mint.