I only know of two people who made replacement shutter curtains for Speed Graphics and Graflex reflex cameras. One retired because of failing eyesight, the other retired a few years ago but was still doing the occasional restoration of large 7x5 Graflex Reflex cameras, bot are in the US.
The issue is the length of the shutter curtain, and the number of slits, and cloth of the right thickness that is dimensionally stable, must not stretch at all. I supplied the new shutter cloth for the last 2 7x5 Graflex Reflex restorations, that was just before Covid.
I have a spare curtain, that I repaired, but it is for a Pacemaker Speed Graphic, around 5ft long, with 5 slits of decreasing width. It is probably for a 5x4 camera, the curtain runs at one tension, with a clockwork to halve the curtain speed. The Anniversary and pre-Anniversary (yours) use an older shutter, again with 5 slits, but also has a tension setter, for 6 different tensions.
I have a length of shutter curtain cut for a 5x4 Speed Graphic, easily trimmed narrower for a QP camera, the issue is the metal edge strips needed for either side of the slits. It would not be an easy job, and really requires experience.
When I restored my pre-Anniversary Speed Graphic in 2007 I was able to save the shutter curtain and re-coat it. Since then, I've done similar with some Pacemaker Speed Graphics. It really depends on the condition of the curtain.
Ian