If they are, can they please be merged? If not, do we have the correct images as they appear to be identical. If there is a difference that eludes me, could this please be specified in the comments and the second coin be placed in the appropriate currency (it currently has no currency assigned)?
Former Numista referee for banknotes from Ireland, Northern Ireland, Scotland, Wales and Saint Helena.
Yes, it's strange, I don't know if they are duplicates because the weight is very different (1.9 gr and 4.12 gr). Furthermore, the references in the Lec Catalog "Monnaies et jetons des colonies françaises" are different (Lec#20 and Lec#22). Perhaps someone who has this catalog can clarify the issue.
As for Krause, this catalog cites a KM#1 with dates 1780-1789 and a KM#1a from 1789 and silver (which is not in Numista and I don't know if it exists, maybe this coin is our duplicate?) It also cites a Piedfort P#1 from 1789, but 10 Centimes, which is strange since on this date I think centimes were not the monetary unit.
Coin referee for: Andorra, Equatorial Guinea, Marshall Islands, Moldova, Liberia and Spain
Banknote referee for: Andorra, Equatorial Guinea and Spain
Our listing gives the same diameter for the two and both are said to be billon, so it's unclear if the weights are accurate. Lec should hold the answers.
Former Numista referee for banknotes from Ireland, Northern Ireland, Scotland, Wales and Saint Helena.
Agreed, the top of the crowns are different (six arches vs five). Is this within the range of die varieties KM notes or is one a Birmingham fake as opposed to KM#1a? Both have curved bases to the crown, suggesting both could be fakes. However, looking at the images online, there are quite a few different crowns but none have a truly flat base. Let's hope we can get some clarity from Lec.
Former Numista referee for banknotes from Ireland, Northern Ireland, Scotland, Wales and Saint Helena.
The reason I raised this is that I'd ordered a Cayenne 2 sous and wanted to try and figure out if there were multiple types or not. My coin has now arrived. It looks very similar to what we have listed as Lec#22 (six-arched crown, tilted pomegranate), appears to be copper not billon and weighs 3.7 grams. Images of billon pieces can be found (such as here) with the five-arched crown and straight pomegranate. I'm inclined to think that we should list two types, real billon coins and fake copper coins. Whether we put the fakes in Exonumia is another matter.
Former Numista referee for banknotes from Ireland, Northern Ireland, Scotland, Wales and Saint Helena.
I have checked my old copy of the blue Gadoury (which becomed the Lecompte few years later).
There has been very few samples of a piedfort in 1789 and its mass is mentioned as 4.29 g which is coherent with the Numista entry for the sole 1789 year.
Unfortunately, in my blue Gadoury, there is a single image for the 2 coins (they were listed under the same entry (#5 for Guyane) and I can't confirm/infirm the 5 vs. 6 arch crown discussion just on the basis of my book. But for sure, there is a difference.
I would thus suggest:
Modifying the title so that both coins have the same name at the exception of one slight detail (see below)
Adding the (piedfort) to the title of the heaviest coin
linking them together (I think it is already the case)
P.S. : I think several users got wrong with this coin, not noticing the difference in terms of mass since the “average” price is 17 euros whereas my book indicates a price which is 7 times higher than the regular coin's one.
