In re-checking this on-line, I found an older thread you created on LP101 about the same lock:
Subject: American #????I am going to disagree with squelchtone's ID of the lock made back then which he has repeated here above this posting:
squelchtone wrote:That would be the American Lock Model: AMS100 / Series: MS100
NSN: 5340-01-346-7462
One of the coolest looking padlocks I've had the pleasure to add to my collection.
thanks for sharing your pics, happy picking.
Squelchtone
The National Stock Number that squelchtone lists does not match the lock in the pictures that you posted here and in your video, that NSN is equivalent to a commercial Series ASL40B padlock which is a rectangular body brass padlock 1-1/2" wide, 3/4" thick, with a 1/4" diameter shackle (B= brass option shackle), with a 3/4" shackle clearance... The ASL40B lock appears in photos on this page at the American Lock website:
http://www.americanlock.com/government_ ... dlocks.jspThe lock with the cylindrical brass body is definitely a government lock, probably purpose built for some odd need, but I am not able to match it to AMS100/AMS103/AMX100 products, a likeness of which appears in the July 2005 price book on page 14 and on this website:
http://fmgeorge.com/american/gov/ms100.htmhttp://fmgeorge.com/american/gov/mx100w.htmThat cylindrical lock is not an AMS100, nor is it the ASL40B referenced by the NSN number provided previously... I would say that it was a mistaken identification... You can double check the NSN chart on the American Lock website using the link provided previously... I do not know what American series or NSN number lock your cylindrical body brass lock is, but is is clearly neither of the above options... Each lock has a unique series number based on its characteristics, your cylindrical body lock is identified by an as yet unknown American Series number...
~~ Evan