This is Dutch export key and lion with 2 - corresponding to 833 as also marked. Year N = 1923, Finaly the Minerva mark. But the V does anyone know his name? .
The Zilverfabriek Voorschoten used this mark from 1925 untill 1961. So the N in the yearletter is not 1923 but 1948. The zilverfabriek in Voorschoten started in 1858. .
In 1948 there were two types of N in use. One without a crown (probably used before the crowning of Queen Juliana in 1948) and one with a crown. This year letter N in your picture is typical for the N without the crown. For the Z from 1934 the right leg is quite different etc. .
The crowned N of 1948 was used from July 1st and was to celebrate the 50th year of Wilhelmina's reign. Later that year she stepped down in favour of her daughter Juliana. According to Voet this crown was suggested by Citroen. .