I don't collect AMO 8-32 Screw-In heads, but here is a hint for those who do collect them...
Most collectors agree that adjustable arrow clips work best for displaying traditional glue on broadheads.
For those who collect the AMO 8-32 Screw-In heads, the simple shadow box design works well and is far less expense and less work than using arrow clips, threaded bushings and lengths of shaft material.
The threaded base of the AMO 8-32 fits into a hole in the horizontal boards.
If blades are glued into the body, AMO 8-32 Screw-In heads are easily moved from one position to another.
The most restrictive feature of the shadow box design is the length of the heads. While AMO 8-32 Screw-In heads almost always easily fit in the shadow box height of 4-1/8" between boards.
Many traditional heads are far too long to fit in the 4-1/8" space between the horizontal boards.
Heads are easily moved from hole to hole...