Interesting point. I do brand my work, and sign it when I remember to.That is a fantastic looking table, nice work.
I know you probably don't need to worry about it with your clients, but I'm guessing you have to be careful not to produce pieces that may complete an antique "set", which a client may try to pass off as original?
Do you mark your work in some way?
Just thinking of all the antique/collectable firearms out there. Seems like I'm always seeing posts, asking if a gun is an original Luger or whatever, as someone has forged the markings and trying to pass them off as such, at a much, much higher price.
Either way, I'd guess you're getting paid what you expect and documenting your work here also, so monetarily and liability wise you're ok.