I was wondering if anyone can tell me in aproximation how much gold is inside a Carthaginian electrum stater. Is it more gold than the Bosporus electrum staters for example? Thank you all!
They were struck on varying degrees of fineness. The trend was downwards. So to answer your question, it would need to be determined which issue this coin is from. Weight of this stater would help with that, as always. However I would think this is more likely to be a gold stater, rather than electrum. It looks like an early issue.
I am asking generally. I am not asking for this particular coin. So what about a stater weighting about 8gr? Would this be a closer to gold one?
A stater weighing about 8 grams would be an electrum issue, not gold. However, for clarity, the image which you posted is of a gold stater sold in 2015 weighing 9.25g. See here: https://www.acsearch.info/search.html?id=2666015
There is no simple answer to your question because these gold and electrum coins were produced over ~75-80 years with gradually decreasing gold fineness. Here is a thread where you can get more information: https://www.cointalk.com/threads/carthaginian-gold-and-electrum-coin.380769/#post-7595146
Basically yes, the 9+ gram coins are roughly pure (I think often cited as 95% or more fine) gold, and weigh roughly 9/8 of a standard gold stater. The later coins drop into the 70s and 60s % fineness. The main differentiator is style, the early series has aa very refined greek style (line the one you posted) while the late series is somewhat more crude and Tanit has a much more punic look with sharper features.
