The 1955 Netherlands 1 Guilder (1 G) coin is not silver. It's struck in cupro-nickel (75% copper, 25% nickel)—a durable, silver-colored alloy containing no precious metal.
Obverse: Queen Juliana portrait facing right, "JULIANA KONINGIN DER NEDERLANDEN"
Reverse: Crowned Dutch coat of arms (lion with sword and arrows), "1 G", "1955", "NEDERLAND"
The Netherlands last struck circulating silver 1 Guilder coins in 1930 (.720 fine silver). Post-WWII, rising silver costs forced transition to cupro-nickel (1954 onward). The 1955 issue represents this new base-metal standard.
As a common circulation coin:
No bullion value. Historical interest lies in its representation of post-war Dutch monetary reform and Queen Juliana's reign (1948-1980).
A magnet will not attract cupro-nickel (non-magnetic), unlike nickel-plated steel coins from other eras. Weight (6.5g) and distinct "ring" when dropped on hard surface help distinguish from later issues.