So I am a bit confused about Valeros (and weapons in general)
Lets just keep it simple so he is not choosing to recharge the weapon just reveal it and lets make it a simple longsword.
For the melee check do I roll/calculate the skill check as
1 d10 + 1d8 +3 (so following the wording on the longsword card)
OR>....
1d10+1d8 (for the sword) PLUS 1d10+3 (for the melee check on Valeros's card).