Look at the nice-looking coin in our picture. It comes from Goldberg Auctioneers and sold for a whopping $1300 US dollars in the auction in 2010. CoinQuest thanks Goldberg Auctions for use of their coin photo. It's a beauty.
Norway issued three different denominations all with roughly the same design during this period:
24 SKILLING: 22 mm diameter, 5.78 grams
1/2 SPECIE DALER: 30 mm diameter, 14.45 grams
1 SPECIE DALER: 39 mm, 28.89 grams
Here are catalog values:
24 SKILLING 1845-1855:
worn: $30 US dollars approximate catalog value
average circulated: $100
well preserved: $200
fully uncirculated: $600
The coins dated 1849 are extremely rare, without price catalog.
1/2 SPECIE DALER 1846-1855:
worn: $80 US dollars approximate catalog value
average circulated: $225
well preserved: $450
fully uncirculated: $1300
The coins dated 1848 and 1855 are more rare multiply the values by 2 times.
1 SPECIE DALER 1846-1857:
worn: $150 US dollars approximate catalog value
average circulated: $500
well preserved: $800
fully uncirculated: $2000
Condition plays an important role in the value of coins like yours. The coin in the picture is in much better condition than an average circulated coin, and this, coupled with the fact that there are no stains, darkenings, or cleanings, make it worth much more than the average circulated price quoted above.
NEVER CLEAN A COIN. CLEANING RUINS VALUE.