Recognise this stemware mark?

Anyone know this mark? Thanks
4AA1F96E-EF5F-46C6-9B27-EB21F6F1EF74.jpeg
in advance.
F0F91B13-C8DA-4DD2-A96F-055A634584DE.jpeg

Never seen it before…a new producer?

Zwiesel Rosé glass perhaps? I’ve never seen that mark before but it appears to be a Z.

Isn’t there another producer… Zaalto???

It might be the older Zafferano mark, but I’m not sure.

Thanks for the input. I bought them at an op-shop in NZ. Judging from the fineness of the lip, they seem to be very high quality. Maybe I’ll contact those Z companies you’ve mentioned to see if they’ve ever used that logo.