Hedging his bets.
 

I hate it when sellers do this:

http://www.ebay.com/itm/1935-Diamond...item3a93e609dc

and at the same time:

http://www.ebay.com/itm/1935-Diamond...item3a93a28e79

I sometimes do this by accident.

I have sent an EBAY message to the seller, so we will soon see if it was done accidentally.