rt50

[wilstan22]

19d A first example(5)

[Beatrice35]

Prime :-)

[Rollo]

Vowel

[ianmunt]

Model?

[drummo]

i would say model, the first example of a model

[BilSuth]

Model and novel looked possibles but it must be VOWEL -- the letter A is the first example alphabetically.

[djwepg]

I agree with Drummo, as there's no A in either vowel or model

[Rollo]

This is a cryptic crossword.

If the answer is MODEL then where are the cryptic subsidiary indications within the clue?

[BigDave44]

I'm in the "Vowel" camp !!