I recently purchased a lot of 1929 R316 Kashin's from ebay:
Link. One thing that I noticed about the lot was the the cards seemed much whiter than the usual sepia/creme colored tint found in the Kashin's. I had seen a similar tint in a recent SCP auction for a Kashin Gehrig here:
Link
When I received the lot, I compared it to the Kashin Gehrig that I already owned, and the tint does seem different. Has anyone seen this before? There were a number of other raw copies in the lot, so I did send one of them to SGC to get their opinion on the card also.