Times Jumbo 684

[blueberry2]

47d Throw it over a painter of Victorian scenes (6)
?I????
I guess dicast but I'm sure it isn't

50d One eats fish more highly favoured in East London (5) O????


53a Novel Beckett initially set in a French port (7)
A???B??
(Algebra was in Murphy, one of Beckett's novels)


56a Zealously see about composer's introduction to theatre (9) E???E???Y probably earnestly

I can't see a full explanation for any of them. Last four clues, please help with analysis if possible. Many thanks.

[netkey]

53 Antibes (anag)

[johnalex]

50d Otter . . . . (h)otter (drop the 'h')

[kayakamina]

47d Tissot.....toss it

50d (H) otter

53d Antibe....B (becket)+set+in+a

56a Earnestly....Ely+arne +t (theatre)

[gen2]

47d toss it backwards = Tissot

[kayakamina]

Should be arne's in 56a

[blueberry2]

Thank you all for putting me out of my misery and so quickly!

Could you help with very last clue which I can not see for the life of me - 55a Briefly fail to rein in an Arab (5) O?A?I - I can only think of okapi but can't figure it out. Many thanks.

[netkey]

Omani - arab
briefly fail = omi(t)? - rein in an

[blueberry2]

Wonderful. Thank you so much again.