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Dave Moll · 14th Nov 2018, 11:47 am

More likely to be 3BA, as the GPO tended to use odd-numbered BA threads.

14th Nov 2018, 11:47 am	#3
Dave Moll Dekatron Join Date: Feb 2005 Location: West Cumbria (CA13), UK Posts: 6,130	Re: 56C ringer. More likely to be 3BA, as the GPO tended to use odd-numbered BA threads. __________________ Mending is better than Ending (cf Brave New World by Aldous Huxley)