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1961 would place it right at the beginning of the Holdsworthy time

the date would be quite late for clamp-on brakes. some new cycles continued to be made with them well into the 1950's but 1961 sounds late

while a Claud Claud by contrast would show different ends and ends treatment

it certainly "looks" early for 1961

Chater Lea makes one think of a somewhat earlier epoch. but of course we do not know that the chainset was ever on the bicycle since grandad is reported to have been accumulating bits for an eventual build...

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one subject not much thus far addressed is the question of intended application

to our eyes of a later generation mixed signals are perceived

whilst there are no eyelets on either fork ends or dropouts we have a lamp boss, pump pegs and attachment points on blades and stays

note that chainstays are of the conical/rapier pattern with no dimpling

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