Vintage Galvanised Progress Milking Bucket/ Pale

Vintage milking bucket made by Progress and in as found condition. It has had a bit of a clean but how far fo you go on these sort of items before you start ruining them . It is a sealed bucket/ the lid doesn’t come off so couldn’t tell you what the insides are like .

Please study the photos for a better description

Measures approximately

10.5 inches high

12 inches top diameter