Well, hate to burst the bubble - but the rules for Mithral don't say that the Mithral Bonuses don't stack with the Masterwork Bonuses.
They say that they are always Masterwork
as well as Mithral, and that the costs for the masterworking were already included in the listed price.
Two of the Mithral Items don't seem to indicate that the bonuses are stacking - but the material description definately implies that they
do.
Actual text:
Weapons or armors fashioned from mithral are always masterwork items as well; the masterwork cost is included in the prices given below.
It never says a word about the masterwork
bonuses being included in the Mithral list - only the
costs. Costs and bonuses are normally different things - so I predict that there will be rampaging arguments in this edition as well. After all, it literally and directly says something that is completely different than some of the example items in the special material section.
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On an interesting side note: it costs 300 gp to make a masterwork Halfling's Dagger. It costs 250 gp to make a
mithral Halfling's Dagger - the cost of the masterworking is somehow already included in this smaller total.
Discuss.
-Frank
