In the 1980's Aquacentrum in Prague (Czech Republic) developed a modern diving equipment for the East German military (NVA). It became the SPP50 which was manufactured in a very small qualtity: 21 sets were supplied. There is info available at the divescrap index: https://www.divescrap.com/DiveScrap_INDEX/Aquacentrum.html
The divers woolens offered were part of such an equipment. Condition: see photo's, price €150,- + shipping.
Czech made Divers Woolens for DDR NVA (East German Army)