35 tailite stand differences

[gearheadbill]

Working on my 35 touring sedan, looking thru boxes of extra parts, I noticed that I have 3 different length tailite stands. One is short at less than 8” long, the second is around 10 3/4” and the third is 11 3/4”. The long ones are on my trunk back sedan and push the license plate back enough to clear the bustle. What are the other lengths for. I’m especially interested in the short ones. Thanks