Hi Wombat
Those are some really nice examples.. I remember seeing a DDR a few years back on ebay ( located somewhere in South America). It was movement and dial only , broken staff and the seller had a buy it now for 35$. I did not get it but i know the guy who did...
Sure send me the serial number info on your 47.4 BULL ... would be more then happy to help.
The world time pocket watch dial is really something.
Here are two pics of other 47.7 s one is mine the other was one found on the net years ago.
std 47.7
and the 47.7 OBS from my collection.
Good Hunting
Bill Sohne