https://piettafirearms.com/37-1862-spiller-burr-triggerguard-screw/
#37 1862 Spiller & Burr Triggerguard Screw
spillerburrscrew
https://spareparts.pietta.it/gun-part/1863/1863-triggerguard-screw-blued/
1863 Triggerguard Screw Blued - F.lli Pietta
1863 Triggerguard Screw Blued
screwbluedfllipietta