The four spoons represented are some early High Standards. Three of them are either very scarce or scarce in the configuration shown. The one in the box is the most common with roughly 140K units being made from 1946 through 1950 it is known as the HD Military (the H denotes exposed hammer), what makes it unique is that it is virtually NIB with its paperwork.
The top pistol is the earliest and was made in 1940 with only 1000 units being made, it is known as an HE. It was the top of the line HS in its day. Of those 1000 units roughly 250 to 350 were 4 1/2 barreled so this is one of the toughest configuration HS to find. In 1940 it was used by champion match shooters and gained a reputaion for accuracy
Next is a First Model Olympic in 22 Short known as a GO, this pistol was only made in 1949 and 1950 with 1200 units being made. The ratio of 4 1/2 to 6 3/4 inch barrels was 3 to one. It was the first time that HS offered a take down barrel assembly where barrels were interchangable. It was also unique that it used an Alumium slide for the first time, to be able to cycle the 22 Short cartridge. It too is a very difficult pisol to find.
The fourth again was also only made in 1949 and 1950 with only 2600 made. It to is top of the line and is kinown as the GE. What makes it unique is that it is a factory two barrel set. This model in this configuration is scarce especially in this conditon.