Cut barrel Parkers suffer severe losses in value, are of little interest to collectors. Cut stock Parkers suffer some significant value loss but can still be of interest to collectors. Sleeved Parkers are of no interest to collectors. They are usually of no interest to shooters either because the sleevers usually use tubes that are much heavier than original Parker tubes in the interest of safety and interchangability. Sleevers buy one thickness of tube so it will fit all. That one size is usually "thick". A friend once bought a 28 gauge sleeved Parker that weighed about seven pounds. It was a cute little thing and he would like to have it back for the $500 he sold it for. I would like to have it too.