J jordic1968 Retro Guru Jan 6, 2025 #11 Had one time ago as well. It's GS, San Marco, here an old thread explaining , hope it helps: https://www.bikeforums.net/classic-vintage/276977-g-p-seatpost-please-help-identify.html
Had one time ago as well. It's GS, San Marco, here an old thread explaining , hope it helps: https://www.bikeforums.net/classic-vintage/276977-g-p-seatpost-please-help-identify.html
