Denmark issued a bunch of 2 kroner coins during the early 1900s, and they all have neat patterns. It would be a worthwhile collecting endeavor to assemble a set of nice-looking examples, one from each of the 12 different patterns. It would not be overly expensive, but it would not be cheap, either.
While early 2 kroners were minted in silver, by the time 1924 came around Denmark moved to aluminum-bronze. Mario's example is in such good condition, it looks like gold. But, alas, it is not.
Here are some typical catalog values for Denmark krone coins dated between 1924 and 1941. They all use the spiffy interlocked Cs and crown patterns. The Cs stand for King Christian X, who ruled Denmark between 1912 and 1947
worn: $5 US dollars approximate catalog value
average circulated: $12
well preserved: $20
fully uncirculated: $100
1/2 krones dated 1926 and 1939 are more rare and catalog at twice to three times these values
1/2 krones dated 1940 are more common and catalog at $50 for a fully uncirculated specimen
worn: $6 US dollars approximate catalog value
average circulated: $10
well preserved: $40
fully uncirculated: $200
1 krone coins dated 1924 are very rare, cataloging at $1200 in average circulated condition
1 krone coins dated 1925 and 1926 are common in low grades, a worn coin catalogs for $4 but an uncirculated coin catalogs for $250
1 krone coins dated 1939 and 1940 are quite common, a worn coin catalogs for $4 and an uncirculated coin catalogs for $100
worn: $4 US dollars approximate catalog value
average circulated: $15
well preserved: $40
fully uncirculated: $250
2 kroners dated 1924 are rare, cataloging at $600 in average circulated condition
2 kroners dated 1939 are common, divide these values by three
2 kroners dated 1941 are rare, cataloging at $120 in average circulated and $900 in full uncirculated condition
Use our Important Terminology page to properly understand these catalog values.