Hello and welcome.

I can't see anything readable there, could you please try rubbing a little talcum powder over the signature with your thumb, to help bring it up for the photo?
Could we also please see the whole piece?
Often, it's easier to recognise somebody's work than their signature, and that can be used to work out if the signature is by the suspected artist.
It is also much better for our records to have an illustration of the piece being discussed. Thanks in advance!
