Sluicing guns value

Just looking for some advice on the value of an old slucing gun. My mate has come on hard times and been offered a bit of money for his old blaster. Anyone on here have an approximate value for these things. It comes with the swiveling mount and 1 nozzle attachment.
Cheers for any help.

That is a tough one. The things are like hens teeth & very collectible. Get the right person that really wants one & the sky is the limit. Could test the market by putting it on trademe & put on a stupidly high reserve & see how the bids go & what interest there is.

JW :cowboy_hat_face: