The phrase "Juliana Koningen der Nederlanden" is Dutch for "Juliana, Queens of the Netherlands" and appears on all Dutch coins produced during her reign (1948-1980), as well as some coins issued by the Netherland Antilles during that time. While particular coins may be rare, many are quite common - more detail about the coin in question (e.g., year, denomination and condition) would be needed to give a good response.
The Juliana Koningin der Nederlanden coin is a collectible item that features Queen Juliana of the Netherlands. These coins are valued by collectors due to their historical significance and limited availability. Prices for these coins can vary depending on factors like condition and rarity.
They are not rare.
Rare Coin Wholesalers was created in 1990.
The proper name closest is Juliana, also Julianna, which has a rare variant Jolianna.
You can buy them at coin dealers and coin shows.
Just the year does not make a coin rare.
No, they are not rare.
No.
It means that the coin is rare. For example a 1909-S VDB cent is a key date. This coin is rare.
Determine how many were minted, when and where and the numismatic grade and, last but not least, the availability of the coin for purchase
No and they will never be rare.
Juliana Wetmore is a little girl who suffers from Treacher Collins Syndrome which is an extremely rare genetic syndrome. There have been no updates on her since about 2012 and they were discussing that they were finally going to give her cheekbones.
It does not have to be old at all. An error in the minting of a coin may make it rare. What may turn out to be a rare coin may have been minted in 2012, but nobody has found it and come forward with it yet.