Video from Lynch Imports.

[displayfireworks1]

If you are not on the Lynch Imports mailing list , here is a video they just sent out.
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https://www.youtube.com/watch?v=luzzFwWTe9U
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I believe the average price for one of these old plungers is around $500.00 USD.

[beakman706]

Old but reliable. All you need is about 50 of these and you have one helluva firing system.

[PGH_Pyro]

funny . makes me think of wile E. coyote .