First time i read about was inside "JV44 by R.Forsyth, Classic Ed." p206 where it is said that Feldwebel Bodo Dirschauer recall that many different undersides had been seen over JV44 protection Staffel aircrafts ie: white stripes over red or black as well as chequered ones white/red or white/black!
Then inside "Doras of the Galland Circus from J.Crandall, EagleFiles #1" p14 annotation Nb11, Jerry tell us that there is a known photography from a wing with a chequered underside !
But as far as i know this photo must not have been yet published, nor must have been done any drawings or profiles? Did anyone know something about it?
So Jerry i must tell you how much awaited are your two volumes about Fw 190D. The first one expected for August will especially give us more explanation about JG 301 markings and volume2 will give more explanation about JV 44 and i expect will show us this "chequered" wing
http://www.eagle-editions.com/dorabook.htm
Finally i would like to thanks Eagles Edition and Patty, since i ordered "Wings of the Black Cross Vol 4 + The Official Luftwaffe color chart" via the net on Wednesday 26th April and got it in France today in the morning of the seventieth working day
Note: I have no interest with Mr Crandall nor Eagles edition, etc...