Are they both signed?
The decor on the first one doesn't look like summer fruits to me.
Are they lightly iridescent glass?
A photograph in daylight would be better maybe?
Yes - both are signed, identically, for the second weight the image of the signature is rather small, however - still attached (both orientations).
Yes - not Summer Fruits - the idea was that it could be a test piece for the technique - but I have abandoned this idea in the meantime.
Yes - looks like irridescent surface - but I also have these images only.
I have to add that I don't have the two weights within reach (have been asked to help with an identification) - so can't do daylight images.
I will comment on the MSH suggestion in more detail separately.
Thank you for your considerations - Wolf