I've barely scratched the surface of this fascinating area of the California fractional gold coins but I just want to pass on what I've learned so far. It appears a distinction is made between "cals" and "tokens". The "cals" are the fractional gold coins (full, half and quarter dollar) that have their denomination indicated on the coins. These were privately minted to fill the need at a time when the federal government didn't as yet have their official mint in California or the official mint didn't have sufficient capacity to make all the coins that were needed by the rapidly increasing population. These cals had a gold content sightly less than their indicated value (the difference went to the private minters) and they apparently were in circulation and used a legal tender. Coin experts today generally didvide the manufacture of these cals in three distinct periods, starting from 1852.
The "tokens" do not have a value indicated on the coin, and it doesn't appear to be clear whether they were ever put into circulation and used as a means of payment. Some of them possibly were when there weren't sufficient quantities of the more official cals around. Others were simply traded as souvenirs of the California gold rush. Some of them, naturally the really old ones (e.g. those from the 1870's and 1880's) and those well preserved, have high collector's value.
Among the cals one finds today, from any of the three periods mentioned above, there are genuine ones and fake ones. The latter of course have no value. Similarly, among the tokens one finds today, there are genuine ones from way back which have value, others which are fakes of the old valuable ones which have no value, and then there are recent designs (fantasies) that never existed in the 19th century that also have no value aside from the metal value of the gold that's in them.
Some of the cals and/or tokens made post-1864 were backdated to before 1864 because in 1864 private minting of coins was prohibited and the secret service did indeed clamp down on this illegal minting business. So a coin dated 1849 could well have been struck much later.
I found the exact coin that I posted my query about on Mike Locke's California Gold website
http://www.calgoldcoins.com , in his section on wreaths, and specifically on "Tokens that either defy categorization or that were cataloged before I started the reverse classification scheme". He shows that coins with this particular design come in two sizes which he designates as the quarter dollar and half dollar size. My coin is the half-dollar size (see his photo Misc9_RndH_1849Ind_N1_rev.jpg).
Specifics of this coin: Wreath on one side & Indian Head on the other, round, 9 stars, California Gold 1849, half dollar denomination. And he comments: "Value not established."
I find it curious that he would assign dollar denominations to these coins if they were never used as actual small change but only as souvenirs that you can hang around your neck.
In Locke's section on tokens, he gives plenty of estimates of the value of these tokens, and these generally range from $20-200.
This is a summary of what I've learned so far, and I'm probably wrong on some of these things.
Some good reading on California fractional gold coins, cals as well as tokens:
http://www.coinsite.com/content/article ... fornia.asp
http://www.coinsite.com/content/articles/fractional.asp