What is a 1854 California 1 2 gold coin worth?

This piece needs to be seen for an accurate assessment. It is NOT a U.S. Mint issue. The lowest denomination gold coin issued by the Mint is One Dollar.

They are California Small-Denomination and or Fractional gold. Some are round, others octagonal with Indian heads or Liberty heads. Most of these pieces are gold plated. Coins with bears on them regardless of date, are modern replicas that have no collectible value. Some pieces do have value, so take it to a coin dealer. But don't be disappointed if it's worthless.