Advertising — two Chancellor Hall appearances?
5 March 1978 and 19 March 1978 · both currently treated as research leads
5 March 1978
Punk Music Catalogue lists Advertising at Chancellor Hall on 5 March 1978, alongside Menace, Penetration and Sham 69. Southend Punk Rock History independently lists Penetration at Chancellor Hall on the same date, but its 1978 timeline does not list Advertising in the entry.
Assessment: possible, but the line-up discrepancy means this should remain a research lead.
19 March 1978
Punk Music Catalogue lists Advertising / The Boyfriends / After the Fire at Chancellor Hall on 19 March 1978. Southend Punk Rock History independently lists Advertising / The Boyfriends at Chancellor Hall on that date.
Assessment: stronger than the 5 March lead because two sources converge on Advertising, but still awaiting a primary Chelmsford artefact.
Why this matters
This is exactly the sort of repeat-appearance check that can uncover missed Chelmsford gigs. But a repeat-appearance listing is not enough by itself to rewrite the event archive. The working rule remains: primary artefact first, contemporary corroboration next, later gigography last.
For now the archive therefore says “two reported appearances — both unconfirmed”, rather than creating two confirmed event records.