Originally Posted by
rustystrings61
I'm gonna say 1975 because of the Prugnat 62d lugs which are first pictured in that year. The Competition moved from Nervex Professional lugs in the earliest versions c.1969, then went to Bocama Professionals through the uncataloged lilac/purple and lagoon blue/white variants. I've seen black Mk. II variants with Nervex Professional lugs, but Carlton Capella lugs are pictured in the catalog '73-74 - though Raleigh may have used the same catalog photo. The Capella lugged '73s seem to outnumber the other variants, which would make senses...
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Interesting theory, however, despite all of Raleigh's quirks, I find it beyond implausible that a frame with the previous serial convention starting with an 'H" would have rolled out of Worksop in 1975. I would expect a W#5 serial if it were built that year.