Re frame number NR 85 326. This isn't typical Roberts . They did not use letters unless requested by the customer eg. a post code. If it's a Roberts perhaps it could be the owners initials. The frame number indicates 1985 March frame number 26. Winston Vaz (now at Vaz workshop) would have been working there at the time so he may know . Most Roberts fork crowns at the time would have had an R on them and same goes for the bridge as noted above.
Re frame number NR 85 326. This isn't typical Roberts . They did not use letters unless requested by the customer eg. a post code. If it's a Roberts perhaps it could be the owners initials. The frame number indicates 1985 March frame number 26. Winston Vaz (now at Vaz workshop) would have been working there at the time so he may know . Most Roberts fork crowns at the time would have had an R on them and same goes for the bridge as noted above.