For the cob enthusiasts here, this is a good exercise in two respects. First, attributing out the mint and time frame... Second, determining its authenticity.
1. ATTRIBUTION: A couple of diagnostic points related to pegging the style of this replica "cob", in consideration of the comments quoted below:
"Not a Mexican cross, they have the balls on the ends. Looks like a Bogota cross. Shield is broken which is the first thing that made me think, weird, maybe fake."
"Don't think the cross is right for a bogey; Seems too small - more like a Mexican cross"
-- The "balls at the end of the cross" diagnostic (aka The Florenzada cross, used exclusively on the silver cobs of Mexico so its presence can be used to easily ID a silver piece as being Mexican) doesn't necessarily apply to the gold cobs. While Mexico DID use a variant of the Florenzada cross during 1711-13, they used the simpler flat-edged cross in all other years, similar to Spain and Bogota... I believe called the Crusader's Cross (picture the Crusaders' shields from your Medieval history books)
-- Strike doubling is not at all weird on genuine cobs, both gold and silver... One might think that maybe they would "try harder" with the gold, but there are plenty of really crude, double-struck and/or badly-centered gold escudo cobs out there...
-- Part of "PHILIPPVS" is visible in the legend on this piece... but there is no Bourbon escutcheon of 3 fleur-de-lis in the center of the shield. That means it CAN'T be Mexico. Mexican cob production didn't begin until the late 1670's under Charles II. The only Philip whose name appeared on a Mexico cob was the Bourbon Philip V, whose Mexico pieces bore the Bourbon three fleur-de-lis escutcheon in the center of the shield.
EDIT: I originally stated that no Bourbon fleur-de-lis meant it couldn't be Philip V from ANY of the shield-type gold cob mints - namely Spain (all), Mexico, AND Bogota. HOWEVER, this is not correct for Bogota, whose Philip V gold cobs didn't include the fleur-de-lis in the shield's center. We actually CAN, however, rule out a Philip V Bogota as a possibility because Bogota Philip V pieces didn't include any of Aragon's vertical bar(s) to the left of the Naples/Sicily crest, and also featured "X"s or stars in place of the Low Countries' diagonal bars and the Brabant lion. Clearly this piece isn't of that style.
-- The style of this piece does indeed appear to be Bogota mint during Philip IIII, as has been pointed out. In general, however, when attributing a cob (gold or silver) don't forget that homeland SPAIN produced many escudos issues at various mints, all of essentially the same style (shield/cross) as the Bogota and (later) Mexico issues. Of course, each has certain features that can be used to ID it...
Let's say we wanted to consider that Spain could be where this was from... It can't be a Philip V piece - as with Mexico, all of his homeland Spain gold cobs had the Bourbon fleur-de-lis escutcheon on the shield. It also can't be a Philip III, or (with a very few post-1640 exceptions) a Philip IIII either. Why? The Spain minted gold cobs (and silver) under these kings featured a Portugal escutcheon overlaying the shield. That leaves us with Philip II as the only likely option within the Spain issues... You can then compare several features in the shield which rule that out as well (e.g., the size of the shield sector containing Brabant's lion)
2. AUTHENTICITY: Forgetting that a "twin" has been found for this piece, let's analyze the "coin" itself:
-- This piece isn't a crude fantasy-type fake produced from a hand-engraved cast/die... Clearly, this was crafted by copying an actual coin... which, it turns out, is a Bogota Philip IIII 2 escudos.
-- Just eyeing it up, the metal to me "looks like" good, high purity gold, and this is backed up by it having tested as such.
-- The surfaces seem OK... or nothing jumps out, anyway. No completely damning pores or such, though we can't see the edge to look for a casting seam or remnants thereof.
-- The 6.9 gram weight is THE big tip-off here... Presumably, that's IN the bezel, which itself has to be about 2-2.5g... So let's be generous and say the coin alone is right at 5g - obviously still way under prescribed weight of 6.7 or so. So, it's either:
A) genuine, but clipped heavily... which it COULD be. The flan looks maybe a bit compact compared to other "Bogies"; or,
B) a quality replica done in high purity gold (> 90%)... though produced with a weight lower than the originals
Obviously, if the weight was true to the original, it would be less of a consideration and trickier to determine that this is a replica... Also, when you encounter a piece in a bezel (esp. if you relatively novice with these), it's a good idea to keep alert to the possibility that it's a replica... Of course, there are MANY original pieces mounted in bezels, but a lot of these quality replicas are produced for jewelry usage.