Halved British penny - any idea?

This British halved penny has been in my collection for nearly a year. I think it's a Henry III, but am unsure. Any help is appreciated:

18 mm, 0.67 g

 

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It's a long cross, so yes

 

Thanks @John Conduitt.
Could you help me with finding a similar (or same) coin? I have trouble reading the legends:
Obv: ?VEREX:
Rev: OIC AIT (?)

 

The obverse will be HENRICUS REX. The reverse is the question...

 

I think this is the same type:

BRITISH COINS, Henry III, Long Voided Cross Penny, phase III (1250-1272), class 3d1, Canterbury mint, moneyer Nicole with H for N, colon after REX , facing crowned bust, initial mark six pointed mullet, 1.48g (S 1364A)
Baldwin's
Argentum Auction 2015 lot 99

BRITTAIN, Henry III. Denomination: AR Penny (phase III, class 3d1 (halved)), minted: England, Canterburry. Moneyer Nicole; 1250-1272
Obv: [+HENRI]CVS REX:[III] Crowned bust of Henry III
Rev: [NIC OLE] OIC AIT voided long cross, three pellets in each quadrant
Weight: 0.67g; Ø:18mm. Catalogue: S 1364A. Provenance: Ex private collection; acq.: 08-2019

Thanks for helping along.

 

Yes definitely Canterbury