Featured Marie Antoinette Bust with marks

Happy Monday (is that possible?). I have a sweet bust of Marie Antoinette that appears to be silver and possible dore bronze? I was wonder if anyone recognizes the silver marks? I thought I might find them under Italian, French or Finnish and so far nothing. It is inscribed Luca Casto di Renzo which is only bringing up some interesting sites (porn LOL). It measures 11.75" in height.
Thank you for looking

 

She’s prettier than most MA busts and portraits I’ve seen (she has a distinct chin!)— Is that Renzo the same as Renzo Colombo?

 

Absolutely.

 

Is that a hole on the side just above the marks? A lamp conversion?

 

I think it is where another garland was attached, you can see the black semi-circular mark it left.

 

Thank you Any Jewelry - yes there was draping garland that is now missing. There are also the same silver hallmarks stamped further up the 'pedestal'. They were harder to see so I didn't add them. Not sure about the Renzo.

 

Could we have a better image of the mark on the far right?

~Cheryl

 

Hi Cheryl - will do when I am back at work tomorrow.

 

Not sure if this will help at all