Just picked up a Crown Graphic - need a few lens boards, blank or 35mm & 42mm holes for my 90/8 Super Angulon and 210/5.6 Sironar-N lenses.
Shoot me a PM if you have some laying around, midwest photo exchange has them for $39 each but would prefer to pay around $20 each or less if possible.
There's an ebay store "heavystar" who has them new $38. US for 3, they are Copal 0 but it's simple to file them out to take a larger size.
I can recommend the seller as I've bought & been using his boards on my own Crown Graphic, and I know quite a few others here or on the LFP forum have also bought from him.
As these are under $13 each new it's pointless buying second-hand