There are about 20 cases where we have hitherto flagged the ring as being tuned to Old Concert pitch (OCP: A=454Hz).
What this really implied was that the tenor note (and thus the key of the ring) had been quoted previously, possibly even within a report from a bellfounder, as being different from the current International Pitch standard (IP), namely that based on A=440Hz.
We intend carefully to examine all such entries (hopefully over the course of the next few days) to ensure that our presentation is consistently IP.
It has further been suggested that - contrary to our earlier version of this item - to retain the showing of that particular flag would be useful piece of historical information.
