Excellent find Jon... I am not sure on the die stage tho... The chip you pointed out looks to far east on yours compared to VVs Stage C http://www.varietyvista.com/02b%20LC...986DRPM001.htm That may be a crack on C11??? Are those abrasions in B11 and B12??? Hopefully you can give it a good bath and that will expose some better markers??? Can you match any markers around the date/MM for the different stages??? So you started your SL40