WTT: 21mm M SA for a IIIG body

I own an excellent++ 21 mm Super Ang M lens that I'd consider swapping for a like condition IIIG body. The 21 is the classic f/3.4, in black, the finder is black plastic (Germany) w/ original leather finder case. The lens also has a Leitz (Germany) chrome UV filter. The lens serial # is 2750931. Complete w/ rear cap, front hood (in mint). Lens glass is mint. No scratches, dings, dents or fog. Value is $1250-1400 typically. (Excuse the photo quality--my macro abilities are limited by the old Canon Elph I'm using).

Please email me if interested. You must have impeccable photo.net or eBay references. See my eBay feedback using this same email address.