How much is an old cg conn ltd wooden flute worth serial number 53191?

According to Flute World, a flute with the serial number 53191 is most likely a Gemeinhardt student flute model 2SP, as it is within the serial number range of 50000-60000 produced during 1968-1978. However, Gemeinhardt was an American manufacturer, and C.G. Conn Ltd. was a British company, so it is very unlikely to be a Conn flute.

The key is actually an F# trill key. It enables easy trilling (alternation of notes) between notes F# and G.

As for the value of the flute, Gemeinhardt student flutes typically range from $100 to $300 in playable condition.