Velbon CX580 Tripod Camera Plate
This is a camera plate for a Velbon CX580 Tripod which is about 15 years old and the plates are near impossible to get. You'll need a 1/4" mounting screw which you can pickup easily. 20% infill is probably strong enough but i'd print at 80 or 100 as its just a small but important part. PLA works fine. Mine printed on an Ender 3. Hope its useful to some.
Turn upside down to print, so that top of plate is on the bed. Then you won't need any supports etc.