Will keep you posted if anything turns up - got a couple TDs doing some digging.I believe these are long out of production, try emailing some TD’s.
Let us know how you go I would be keen if any could be sourced
There are a few watches out there now which are blue on white with a blue leather strap. The IWC is available, I'm sure there are others.I imagine this would look just as hot with a blue leather strap.