Hi,
Thanks to the splendid work by our Polish friends, this foundation has finally been documented. Please see: http://www.gyges.dk/Errata.htm
bregds
SES
...And next spring, after some excavation work will have been done, we are coming up with an unknown derivative of typical Was-M anchor block, in which both longer edges are sloped in the same manner as the shorter ones! Plus some another mysterious "blocks" from the Was site!
.