I have a guess at 244.

It is a weight from a chain from a WWII D-Day Flail tank.

See the picture on the right near the bottom of:
http://www.pbs.org/wnet/secrets/case_dday/clues.html

The front of the tank had a rotating cylinder with 6-ft. chains attached.
The chain had fist-sized weights hung on it. The flailing chains detonated
mines.

"R.H." wrote in message
. ..
Two sets of photos have been posted this week, the first one is new and
the
second is a repost of unsolved objects. Some of the items in the unsolved
set may have been correctly answered previously but I wasn't able to
verify
them so I've included them in this new post.

http://puzzlephotos.blogspot.com/


Rob