It appears to be a 1710 gold 4 Escudos of Felipe V (1700-46) from Mexico City. Check the weight on it, as well - 2 Escudos would be around 7.67 grams, while 4 Escudos 13.5 grams.
The elements of design are easy to distinguish. However, since I don't specialize in cob coinage - I don't know the characteristics of counterfeits for this series. Also, if assayer wasn't visible, or even year - you could still narrow the date down. You would know that it's a post-1700 cob because of the presence of the Bourbon escutcheon of three Fleurs de Lis, placed in the center of the shield, since Philip V was the first of the Spanish-Bourbon dynasty and his first reign was from 1700 to 1724. Also, you could establish that it was minted prior to 1743, when Mexico City mint stopped the striking of cob type of coinage altogether.
I came across one of these years ago. A friend had it but I cant remember the details of the coin. I believe the member who posted here had it right though!
Young Numismatist ............................ and growing!
My first impression is counterfeit one escudo of the Mexico mint. The design elements of the cross just look wrong. The weight is way off. The 1 escudo is the smallest denomination gold cob minted in the new world so weight would have to be close to 3.83g. There is too much design left for it to have been trimmed and salt water won't effect gold to the extent of removing half it's weight. The shield side should be rotated 90 degrees clockwise. Then the mint mark oM will be clear but the M is on its side. Second impression counterfeit. Dated cobs of Mexico from this era are very scarce, 1 E are extra tough.
Comments
8 Reales Madness Collection
You must really know your Spanish colonials!
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8 Reales Madness Collection
18mm would point at 1 Escudo - weight around 3.83 grams.
Half Escudo would be around 13mm across, weight 1.69 grams.
8 Reales Madness Collection
Young Numismatist ............................ and growing!
The shield side should be rotated 90 degrees clockwise. Then the mint mark oM will be clear but the M is on its side. Second impression counterfeit.
Dated cobs of Mexico from this era are very scarce, 1 E are extra tough.