I'd prefer if the nailhead looked similar to Manton's. It might be easiest to ask Minnis how best to create the look.
It should be easy for Minnis to reproduce this cloth because it was originally produced by Martins Sons, which, like Minnis, is under the HFW umbrella.
Keep in mind fellas that those pics are MUCH darker than the cloths look IRL 500 is a very pale gray and 501 -- which I own--looks the pic of 500 above.
Was at Ercoles today and thought it might be helpful to snag a picture of 0500 and 0501 so you could see the true color:
Edit: Pics dont appear to be working for some reason
I'm imagining the cloth to be somewhat like this photo below of CG's North by Northwest suit. It's a very hard suit to capture in photos, but this shows the blue aspects of it nicely. If you do the 8/9oz version, I wonder if Minnis could somewhat make it drape better. I've always heard that fabric gets "floppy" while worn. I've never had one made up though.
Not really sure about that either, though it is hard to tell.
I recall an LL thread from long ago that went into this in great detail and no consensus was ever reached. We might need a blu-ray of the movie to be sure and even that might not do it.