I have machined some existing caseback to take a glass crystal as a display back but it it tricky. Most original backs are really too thin to do it right and if you make a mistake, you are in deep trouble! I don't try to do it now and I do not have the equipement to add the threads to a new replacement back. Nice idea however. The Buren movements are like nothing else out there.

: Stewart,

: I don't think its too difficult to do if using an existing Autavia
: caseback but actually making a replacement caseback is something
: else altogether. :)

: I noticed a guy in Germany produces them, then sells them on ebay
: for Omega's,

:
: http://www.ebay.co.uk/itm/280786130588?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

: James.