I'm finally getting some time to categorize my myriad of parts and have this long reach mystery Dia Compe brake caliper. It looks like the spring might be sprung but the caliper itself is in pretty good shape and doesn't look like it was used much.
The first photo shows how it sits normally and then moving it to the position my other calipers are at. Could it be it just needs a cable to hold the tension - this caliper is quite large.
