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Brass engineering sample ?

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Mr_Pea

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Purchased this oddity on ebay, any ideas ?

Engineering sample , apprentice piece or paperweight it does have green baize on the underside.

brass.jpg


Size 3"x3" x 1 1/2". Weighs over 1.6 kg

The slots are just thick enough for an upside down credit card, its too thick with the numbers impressed and a penny won't fit either.

I guess the top was done with a milling machine but the slots ?
 

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Trevanion

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Slots were probably done with a slotting saw in either a horizontal mill or a vertical mill with the piece mounted horizontally.

No idea what it actually is though, Business card holder maybe? :?
 
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