Hi
The signature is a varient of the oriental signatures -made to look a bit like a japanese written signature -they vary massively.
What is more important is its very low on the body and on a leaf in the design
I think when you take it to the expert you'll be very pleasantly surprised
I said it was a 'little' uncommerical-that beacuse yours is big but without a lot of colours (only 2 really), collectors tend to like their big bits to be very impressive.
I always use such a check list approach because almost nothing is clear cut
1 negative is usually OK
2 negatives is worrying
3 negatives and I give up
Yours scored a 'possible' one -largeish signature -but as I said that might be a factor of overall size.
Galle signed pieces like an artist (small, obscure, often hidden, usually lower third on body)
fakes are signed like designer clothes (big, bold, brassy)
But its not an exact science alas
Cheers
Mike