Vintage Lot of Three Pocket Knives Schrade+ Imperial Folding Knife

Description

Three (3) Vintage Pocket Knives
The smallest with the gorgeous case is marked "Schrade+ U.S.A. LB-1"
2.25" with blades in
The yellow knife is marked "Imperial" and something I can't make out
3 1/8" with blades in
The largest knife is not marked as to the maker
3 1/2" with blades in
In varying condition, I'm sure they could use cleaning and sharpening.