The acition is filed as a 702 with square shoulders .The 700 had rounded shoulders behind balls of the fences .
As said Webley did do variations on the basic guns to customer order so this could be a hybrid .
We may never know unless the Webley records can be acsesed .
I believe Richard Gallyon now owns them , they should have the specifications for each gun as these were on a work sheet that was sent to the double gun section and each stage was laid out as to grade , barrel spec , stock dimentions and engraving patern , any other requirements and customer reference if not a stock gun .