Thanks Erich, but wasn't 290123 an A-2?
At any rate, the open question I have now is this: There appear to be two interpretations of the upper camo scheme for He219 WNr 290123. This plane features the black undersides but as for the top, some maintain that the aircraft likely had a 76 base paint with 75 patches oversprayed but others maintain that the base coat was 75 and that a wave pattern of 76 was applied over that. The latter scheme is featured on the specimen under restoration at the NASM (see post #5). The one period photo of this plane I've seen shows the upper surfaces to be very light and it's difficult to tell what the scheme is. However, the engine cowls appear to be very light all around, leading me to think that the likely scheme was 75 patches over a base 76. In the absence of better evidence, I'd lean toward that. However, other schemes in WNr's close to 290123 appear to support the 76 waves over a 75 base coulour. Check out these. The catured one is 290126 and the other is believe to be 290068, obtained from Peter Evans over at LEMB. If anyone has some good info on this, I'd appreciate hearing about it.