BY WEISS LONDON 
"NO AND SON" SO DATE CIRCA 1830
INTRICATE DESIGN. THE FINGERS LOCATE VIA A PIN
THE SLIDING "KNURLED" REGISTER RUNS UP AN INCLINE AND LOCKS THE BULLDOG JAWS
THE ORIGINAL BLUED FINISH IS GOOD
FINDING SIMILAR WILL BE DIFFICULT
ULTRA RARE 

post to all countries. On posting day I will send tracking details.
Check out my feedback for quality assurance.
MY REF
BOX
VINTAGE