I am going to go rather far out on a limb in making this comment, but it is not possible to prove conclusively at this point either way - but here goes.
I believe both of the double struck coins in this post come from the same sources, the same dies and both are forgeries from the late 1800's.
That is my conclusion based on my observations of thousands of "Normal" portrait coins and their counterfeit cousins - especially the late 1800s forgeries.
The REASONS.
1. The dies are a match on all 16 key points of dimension and orientation which I use for die identification. These dies share several anomalies that tend to be unique by virtue of punching sequence - so the probability of all the indicators being on 2 dies of the same date is low.
2. Flip over double strikes are rare by virtue of the fact that it implies a virtual intentional placement for the second strike.
3. The Micro-O dollars were also slabbed and catalogued as legitimate die varieties until they were recently exposed the work of the late 1800's forgers.
4. The mouth of the King especially on the second coin looks far more like a forgery than a real coin.
5. Finally and most decisively, in my opinion, note the uppermost coin and the strike sequence. The Portrait die is the TOP (second strike). Why if the Portrait die is struck OVER the reverse are the Dentils short or entirely missing where the King's name joins the date area? They are PARTIALLY there just before the C - which proves adequate strike pressure for the dentils to make contact with the field level of the First strike BUT the second half of the dentil length on the die is MISSING. To me this is prima fascia proof that the portrait die LACKED complete dentils which is of course IMPOSSIBLE on a real die but normal on dies made by copying actual coins.
For me - that omission of a portion of the dentils is the smoking gun in this case. The piece of proof I needed to take the coin from the suspect category to PROBABLE COUNTERFEIT CLASS 2.
I still say probable, because someone may be able to explain to me how an open collar strike could replicate this missing dentil situation. I only call coins in my possession CERTAINTIES. All coins I have not personally examined and tested fall into the Probable category.
I have gone over this striking sequence several times and I have made sketches of the impact area and I CAN NOT ENVISION a scenario that produces the effect seen here with a portrait die that had COMPLETE dentils.
If anyone can tell me how this could happen - lets discuss.