Today's clues:
12a. Nickname of author, diarist and politician Sir Henry Channon who restored Kelvedon Hall; tokens for blackjack, poker or roulette; pommes frites; or, slices of dried banana (5)
21a. Flower of a plant related to apples; a diamond cut with facets mimicking said bloom’s petals; a soft pink colour; a knot of ribbon on a shoe; or, a marigold window or oeil-de-boeuf (4)
50a. From a shortening of the name of an apple grown from seed, the small kernel or stone of said fruit (3)
32d. Earthenware pipes on chimney tops; wicker traps for lobsters; beer mugs; planters; or, rotund bellies (4)