Well since you guys mentioned old stuff and suppressed , here is my high condition JMB FN1899 ( one of about 2 dozen known) and my suppressed 1945 Walther P38. It is fairly quiet. I was fortunate enough to find an unissued p38 barrel on eBay and had it threaded so as to not ruin the matching barrel.
The Man From U.N.C.L.E. likes your style.
Hmmmm thinking JMB may have had some words with Sig regarding the P210.
That guys design shit shows up everywhere in the gun design world.