No need to direct him elsewhere, I have been out of town and I'm sure we can help him right here.

I own a later model Oliver 312 planter along with a operating and setting up and parts book. 

The decals and schemes differed through the years.

Yours looks to be the latter style, which will be important with Decals, etc. I'll have to take a look at mine when I get a chance and get back with you but I was thinking the metal was Oliver meadow green except the press wheels are clover white.

The scanned pic is of a earlier style decal config.