Lot 76Roos 1st Wmk: 1/- emerald with the Watermark Inverted and with Ship in Great Australian Bight BW #30a(U)d, a few irregular perfs, Cat $500 for each variety. Very desirable "double variety". [** The stamp is mint so the catalogue value is $4000 just for the Inverted Watermark, plus $500 for the Ship in Bight variety. We have changed the estimate to $1400 & the reserve to $1000 **]