France 10 and 20 Francs 1849 to 1851

These are nice gold coins from the old French Republic:

10 FRANCS: 0.0933 troy ounces gold
20 FRANCS: 0.1867 troy ounces gold

Their value is a combination of gold content and coin collector premium.

To compute the base value (BV) of your coin, multiply its gold content by the current prince of gold. For instance, a 10 franc coin has 0.0933 troy ounces and, say, gold is trading at $1500 US dollars per troy ounce, the BV = 0.0933 x 1500 = $140. The price of gold changes every day, so be sure to look it up on web sites such as kitco.com.

Collector premium varies with date and amount of wear. Here are typical catalog values for these coins:

10 FRANCS DATED 1850:
worn: BV
average circulated: BV + $50
well preserved: BV + $150
fully uncirculated: BV + $450

10 FRANCS DATED 1851:
worn: BV
average circulated: BV
well preserved: BV + $50
fully uncirculated: BV + $300

20 FRANCS DATED 1849:
worn: BV
average circulated: BV + $80
well preserved: BV + $200
fully uncirculated: BV + $500

20 FRANCS DATED 1850:
worn: BV
average circulated: BV + $30
well preserved: BV + $100
fully uncirculated: BV + $400

20 FRANCS DATED 1851:
worn: BV
average circulated: BV
well preserved: BV + $50
fully uncirculated: BV + $200
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