A Webley cutaway is for sale on Gunbroker.  These are interesting guns, and probably were made as training aids for armorers or salesmen's samples.  On the plus side the gun still functions as a gun and can be fired, and the seller says it is in pretty good condition.  On the negative side (depending on how you look at it) the gun is full of holes.  Nice piece of history, though, and the starting price is $590 with one day left.  There aren't any bids yet so it is likely to be relisted.

Picture of Webley cutaway