These two CO2 pistols could possibly be the rarest variants from each company. The Crosman Sears JC Higgins first variant was short lived but sported a unique gray krinkle paint job and gray spacer. The Benjamin 2620 was short lived as well and was their “Rocket” Pistol with a 20 shot magazine on top. Only shot 22 caliber round balls, which was probably its downfall. Also Benjamin continued used the smaller 8 gram CO2 cartridges. Got to love the stacking of three tubes. Both pistols came out in the 1950’s