[r-t] Fwd: "double" cambridge?

[Philip Earis]

"Could someone please give me details of what was used in 1752? and how do we know? I cannot find reference in any of the 18th century books to which I have access"

>From www.methods.org.uk (at the end of the plain major collection):

Eastern Bob -14-38-18-18-18-18-18-12 b 27.12.1747 Shoreditch  59/67 
Double Eastern Bob -14-38-18-78-58-16-18-12 d 12.1.1752 Westminster, St Margaret  59/67

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