Diver Dave

Am VERY VERY happy with Davidesens fixed lug Radiomirs, just *excellent* watches and even better after they get beat up a little. (did I mention that they are *great?) But I'm having a really hard time figuring out how to get a top quality vintage-type leather band for them. Want to use a flat Panerai buckle, and have the band sewn on (or provided for local leather guy to sew on). NOT screwed or riveted. Any ideas? Dave