Could it be PS+UW? We have the following on the open source
LEMB Sktz database which are in turn reproduced from page 74 of "Messerschmitt Me210/410 Hornisse, An Illustrated Production History" by P.Petrick & W.Stocker [Midland, 2007]:
WNr.120153 - Me410 - PS+US
WNr.? - Me410 - PS+UT/PS+VJ
WNr.? - Me410 - PS+UU
WNr.? - Me410 - PS+UV
WNr.? - Me410 - PS+UW
WNr.? - Me410 - PS+UX
These are listed as part of a batch produced by Dornier at Munchen...
Cheers
Peter D Evans
LEMB Administrator