Does anyone know where to find a leather field case for a Type II with case. I can never find one without the Curta included.

I have only one, myself, and need it for my collection, sorry. But if I were in the market for one, I would simply contact every single eBay seller showing one, offer a quite reasonable sum for the leather alone, point out that the remaining plastic case and machine are quite readily saleable without it, persuade him to separate the lot into (leather case) and (machine+canister). Then you get your case, he re-lists his machine & canister, win-win. Betcha you could get a positive reply today if you try this approach, cheers