Here is a photo scan from V. Bobba's book on Swiss lugers...the photos on the far right-hand side are those of the trigger used on the M1929 Swiss luger. Some have the swiss cross on the right side, others I have seen do not...
<a href="http://forums.lugerforum.com/lfupload/triggertypes1001_copy1.jpg" target="_fullview"><img src="http://forums.lugerforum.com/lfupload/triggertypes1001_copy1.jpg" width="400" alt="Click for fullsize image" /></a>
Regards,
Pete... <img border="0" alt="[typing]" title="" src="graemlins/yltype.gif" />