Glass Message Board

So - Polish and maybe Krosno (I've had a look at the link and Kronso as a company appears to have been going since 1923).  I'll carry on looking down this route to see what I can find.  BTW this is the first time I've picked up a jug of this type and I don't know what MCM stands for - could someone let me know.

Krosno Glass is a company, but there were other glassmakers in Krosno. However, much of their stuff was made under contract so labelled pieces are rare (I have a boxed set somewhere) https://www.krosno.com.pl/en/

Hi All, over the last 2 or 3 years I have been collecting Riihimaki and have built up a collection of approx 40+ pieces. I have also been picking up pieces that appeal to me that may or may not be Riihimaki. Over the last month I have been cataloguing the pieces and have now properly identified the majority of them. However, I have 6 or 7 pieces that I can't identify one way or the other. So, any help would be much appreciated.

I know this piece isn't Riihimaki but I have been unable to ID any further. The nearest style I can see is perhaps Aseda but again I haven't been able to find the style in any of my searches/references. The base photo isn't too clear, but the base is smooth, flat and polished. Good weight to the vase and sings of wear on the base suggesting some age
Many thanks, Mark

It's this one I think https://www.pressglas-korrespondenz.de/aktuelles/pdf/pk-2008-2w-sg-marinha-grande-ivima-1901.pdf
Unfortunately the orginal photos have gone

Hi.  Hope someone can help.  Blown glass jug that measures 30 cm tall x 11 cm in diameter (excluding handle) and weighs 1.1 kgs, ground out polished pontil and a very elaborate applied handle in clear blown glass.  Possibly crystal (a nice 'ring' when tapped),  Despite the distinctive handle I've not been able to find anything yet so any help would be much appreciated.