Perhaps Sir Marduk know something about this, page 2

I look forward to hearing more about the object when you find out. As a "Former" Numismatist I can virtually guarantee you that it is not an object created for face value (ie. not used for monetary purposes). I used to specifically specialize in Medieval Numismatics, and this particular relic looks quite similar to many weights and measures used in the mid-1700's. When coinage used to contain precious metals such as gold and silver it was common practice for people to cut or shave off the edges of coins in order to retain a bit of the metal shaving for resale. For example, someone would take an English Silver Groat and cut off a tiny bit of metal from the edge of the coin thus reducing the metal content of the coin and also reducing its value because of the lost silver content. So instead of taking the coin at face value, a merchant would simply weigh the silver content on a scale. On one side of the scale would be a pile of coins and on the other they would place weights so as to determine the weight of the silver or gold they were receiving. This effectively would eliminate the need for the merchant to count his money, and instead base all transactions on the weight of the coins alone. Since the advent of coins being intricately designed and made of not-so-precious metals this system has all but died and eliminated the need for it.

Depending on the outcome of where the relic came from and its weight I would bet it is a monetary weight. I do have one further question...How many of these relics are you in possession of? If there is a large quantity of them that were found together it may signify something like a metal ore bar. The Dutch East India Company used to create Copper "bars" (Flat sheets of copper) that would have coin like impressions stamped into them which signified the value and weight of the "bar" at the time of shipment. These "bars" would later be melted down and used for monetary purposes or whatever the recipient wanted, and thus saving the need for the merchant to barter as to the value of the stamped metal sheet.

If there were a large enough quantity of these relics found together what you may have is a Bronze "bar" (I agree with Marduk that it looks Bronze, but I can't tell from the picture, so it could be Brass with an odd patina) that served the same purpose as the Copper "bars". Do you know what type of metal this relic is made from?