I sell a 6mm ice vest from Scubapro in size Men-S (equivalent to clothing size 48). Size chart see photo.
The vest was once bought as a supplement to a 5mm suit and has been hanging around unused for 2 years, as I have afforded myself a 7mm semi-dry. Overall, she has only been in the water a few times and has almost no signs of use.
Price: 30 Euro plus shipping.
Private sale excluding any warranty.