You would need to have a metal on metal strike to initiate it, and some relatively largerpiece that has a natural vibration frequency that continues the sound. I wish I could tape this for upload and play. This is Christmas bell choir caliber of sound. Very pure and musical and very loud and clear for a long time.

Mine is a 1924 gun: 209198.

I have experienced this "pinging" in some of my prior Parkers, too. Not recalling which ones at the moment. I believe the 12 gauge Skeet VHE was one of them.

217395 is my only ringer

This phenomenon has been discussed here on the PGCA forum in the past. Last discussion was 8-10 years ago as I remember.
My grandson's 20 gauge VH 228145 with 26" barrels does exactly as described with both barrels.


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My bell ringer, sadly, had to go "down the road" to make room (read 'raise funds') to make another purchase possible. Based on Brian's assurance it wasn't an issue, and I never planned on 'fixing' it, but this thread has given me some thoughts what I might have done, if I actually was troubled by it.
I'm reasonably certain is was the hammer spring vibrating that caused it, and I think packing the spring, and cup with a synthetic grease, like the red, 'high tack' grease would have dampened it.