The D-ring for the Graflex from ANH has been updated and is based on the recently discovered ‘Elstree saber’; a prototype made during ANH production which shows a double riveted, handmade clip with a D-ring. The clip is made from aluminum, the D-ring is nickle plated steel.
These are screen matched based on the known promotional pictures. Two screen accurate rivets (3 mm) are included.
See the updated blueprint with details here.