Cobb 8 Reales- Real?

jfransch- Great! Yes, I see no signs of casting, and it really does seem to be a fairly heavy coin for its size. And, I suppose, that the fact that it sounds of silver also supports my suspicions that it is real.

The design on the shield (it is Bourbon Shield) make it a Phillip V coin 1700-1746 with a partial year off in 1724 for Luis I who dies the same year.
Here are a couple of your cob's brothers fresh off the bottom

Mexico 8R, shield style of 1714-1724... can only see one castle on the cross side (proper rotation, FYI, is 90 deg. counter-clockwise), so I can't the pinpoint the date range for that... Now, looking carefully, there are two fleurs for the Burgundy sector of the shield... which I think should put it as 1714 or 15. Thus, it likely claims to be 1715 Fleet salvage.

That weight would certainly be commensurate with that amount of sea-corrosion. That said, I don't like the look of this piece - too much in the way of discrete pores on the obv, and especially the extreme mushiness on the rev. This was either someone's weekend garage project to make a cast of a 1715 Fleet piece. The other possibility is that was a Treasure Coast beach find that was cleaned "ham-handedly" (a term I saw recently that I liked), really doing a number on the surfaces.

There ARE casting methods that don't necessarily leave the seam, FYI... would it even be possible to identify a sprue on a piece like this?

jfransch - as John Lorenzo has pointed out, copper likes to leach out since it's so reactive, so this piece would likely likely have a density closer to that of pure silver as opposed to the 0.931 pure alloy this in theory should be made of... That said, IF this was a cast, it DOES have the look of being made of silver. However, I would think a cast (as opposed to a hammered cob) would have a lower NET specific gravity since there would be more air pockets/bubbles trapped within the planchet.

Hello group, I own only one Spanish colonial cobs because these Spanish coinage is hardly understandable. For this cob, I can't tell anything about it but the information was supplied by a reputable seller. It was from Segovia Mint during the period of Philip III's reign, 1598-1621.
This cob is weighted 27.11 grams.

My question is:
The intention in minting these crude cobs was a way to produce an easily portable silver from the New World such as Mexico and Bolivia back to Spain in shortest time. But was it possible to produce such crude cob in Segovia? Why didn't produce the Spanish 8R as a currency there but still produced these crude silver planchets. The disadvantage of producing cobs would attract couterfeiting. I have no reference to tell the coinage of cob in Spain. Is there any expert who can tell this cob was really from Segovia?

From my collection - here is what Segovia was producing in the two segovia mints for Felipe II :
New segovia mint :




Old Segovia mill mint :