Back in the beginning of June I had posted some pictures and asked for help in identifying a SxS a friend owned; this is the one with the Greener crossbolt being the only lock-up. Had a lot of response and great help. This week Frank Silvers had an opportunity to examine the gun at length. His observations are on the Fox Collectors forum:

http://foxcollectors.com/My%20Forum/phpBB3/viewtopic.php?f=2&t=2542

Many thanks to all who contributed ideas and/or advice.
Craig Libhart