The Roman Doomsday Calendar Mystery

Yesterday I went to New York City and visited the Garage Flea Market.
http://hellskitchenfleamarket.com/home/

SALUS FACTOR impressed on side

PAX POSSESSOR impressed on side

 I did not find any bookplates but I did purchase this curious metal object. It's length is 3 3/4 inches. The height 1 1/4 inches  and the depth is 1/4inches. Each of the three circles on the left each has a hole going through it.. It is not as old as I had hoped. With the aid of very high magnification I spotted an impressed  maker's mark: Ted Arnold Ltd.
The Ted Arnold company closed in 1964. They made all sorts of small reproduction items many of which
can be seen by searching Google images or Ebay.
 Unfortunately this object was not found. Does anyone out there know what it is ?
I do not have a clue.
Bookplatemaven@hotmail.com

  2/6/2012

 A reader who preferred to be anonymous has solved the mystery. The object is a replica of an eleventh century English sun dial.. Thank you anonymous

Description

The original dial, of which this is a copy, was found in 1939 in the soil of the Cloister Garth at Canterbury Cathedral in Kent. It was in the form of a tablet of silver, with a gold cap and chain. The gnomon consisted of a gold pin surmounted by a chased animal head with jewelled eyes and a ball in the mouth.