Bulova 1932 President

Here is one I that has been on my bucket list for a while.  It is a great condition 1932 Bulova President Wandering Seconds.  The yellow gold case has no worn areas and polished up real nice.  The movement is a 21J 10AJ movement with a T date code.  It is wonderfully engraved on the back with a stylized monogram and the date 1932.  I serviced it and noticed that the jewel caps cover another capped jewel so essentially they seem useless.   For the life of me I can't figure out what the extra jewels on the wheel train do.   Sounds like it was a marketing claim to up the jewel count.  The ad is interesting in that it mentions this model came in yellow gold, white gold and two tone,   I do not recall seeing anything but yellow gold models in the database.