Type III denim jacket (over-dyed)
White or black shearling lining (excludes top pockets but side pockets with shearling lining would be nice)
Solid, chunky silver snap buttons.
Overdying is usually done after the garment is fully constructed, I'm pretty sure they won't risk overdying an IH-533 type jacket, due to the risk involved with the OD process.
I think it would be possible, but I am pretty certain that H would not want to do it. He'd be out of control of so many variables…..I'll ask him (when I get him drunk) in Singapore....