Found at a local surplus dealer... a whole container of those square white pushbutton switches that I am pretty certain are the ones used on the "front panel" of the 11/23 or 11/73 systems. They have the following markings.... ITW 39-23 301 R 39-23100 89 16 I think they had them marked at 0.59 each, if these are the right ones (got it at work actually, haven't had a chance to go home and check they are the right ones) and anyone wants any, let me know. Jay West --- [This E-mail scanned for viruses by Declude Virus]