Quote from: 68blk500c on March 03, 2018, 10:32:19 AM+1. I have some wheels with the two white/very light grey daubs. I have a set with a very light yellow/beige sprayed on spots on the inner surface of the wheel (hidden when tire mounted). I have some wheels were I haven't found any marks.
I'm going to say that there is variation on this particular detail. I have run into off-white or beige daubs on the rim tire surface (read hidden by the mounted tire). Those were superb condition original dry climate wheels. That daub is likely either an inspection mark or a quick visual identification mark, either of which could have random placement by various workers.
Not challenging the daub being on the backside near the weight area (I have seen that also), just offering other observations.