Quoted from Meegis:This was supposed to be used for the upper drop on Williams's Indiana Jones. Hence having to hit the drop 3 times to start the mini multiball mode.
Likely scrapped the idea because the target would be too fragile at its tallest.
You are correct! The patented Triple drop target was a Totem Pole in the upper right hand side of the playfield. I am not sure why it was removed, for cost or fragility, but my original sample build has in installed. The Plastic Totem skin is broken. I know someone who has an extra, but he won't sell. I was going to try the original plastic supplier to see if he still has the tool to make or a drawing. I might be able to have it 3D printed.