I have got hold of a RiAA with 7 Pin Din connectors where the datapins are reversed throug the unit.
Is it this one? https://shop.oneremote.dk/shop/69068-riaa-amplifier/4199-riaa-ii/
(I assume that it swaps the datalink connection from pin 6 to 7)
Location: Warwickshire, UK
My B&O Icons:
