May 30, 2012 at the prestigious Christie's auction in Hong Kong silver fountain pen Ancora Neptune with a rare number "88.88" was sold for 25,000 HK (about 3300 US dollars).
In eastern countries, the number "8" is considered lucky because it sounds as well as the word "prosperity".
Thereby the combination of numbers "88.88" becomes even more attractive. Ancora Neptune Pens Collection for the first time was introduced in 2010 and currently almost all pens are in private collections.