mcm modern glass vase -unknown mark

This is about 8" tall and 3.25" square. It has a satin/frosted stippled finish with raised and polished geometric shapes. The mark looks like a "C" with a line. Any ideas? Thanks

 

Here is a glass marks database you can search. I thought G but I'm only a researcher and not a glass person, so it could be a C

Glass Manufacturers' Marks on Bottles ~ Page Three (glassbottlemarks.com)

 

I suspect French.

 

I was kind of leaning Scandinavian but...

 

Hi there
Here is a link to your Piell & Putzler vase.
http://cfb.unh.edu/phycokey/Choices...ORY OF THE PORCELAIN FACTORY PIRKENHAMMER.htm

 

here's similar with sticker as well

Block Glass Vase From Peill & Putzler Designer Horst | Etsy

 

Thanks much!