i've got a lovely custom-built Bob Jackson lugged 531ST touring frame built for 26" wheels (increasingly popular for touring)
has cantilever/v-brake mounts (including rear cable hanger), braze-ons for rear rack and mudguards front and rear. rear spacing is 135mm and has vertical dropouts. dark racing green with red decals and headtube. paint is in largely very good nick, looking fairly new with a few marks from the front mech clamp on the seat tube.
54cm square - i'd say suitable for someone 5'7-5'10ish
basically looking to swap for something similar but built for 700c wheels - would need to be stiff and solid enough for fully loaded touring, have canti mounts, braze ons for mudguards and racks and 132.5/135mm rear OLN spacing in a 53-56cm size.
no camera to hand, but can probably sort some pics if anyone's interested. can also offer cold hard cash if anyone's got anything suitable to offer :)