Criterion DVD

Italy CG Entertainment Blu-ray

BFI Blu-ray

Italy CG Entertainment Blu-ray is 4K resto, but horrible colours. 2019 BFI Blu-ray is the older master but better encode + extra footage than Criterion

Criterion 4K Blu-ray

Criterion 4K Blu-ray > Curzon, see caps https://slow.pics/c/mbpnweKM and see grade reference from promo images https://slow.pics/c/TfGmRNDL

Almost every source has an entirely different look. Only two that match promo images are Criterion and CG Entertainment's Italy 1080 release (for 4K they did their own HDR regrade)