Vintage Nemrod J-Valve

For the vintage scuba collector... a Nemrod J valve.  This is the best condition I've seen on one of these vintage valves... almost flawless.  Valve should be considered for decorative purposes only or buyer should ensure valve is rebuilt/serviced by a qualified technician prior to use.  Valve is 3/4" thread, burst disc assembly unknown, however it was removed from a 2250psi LP72 scuba cylinder.