Early j&j.Colman Ltd bath mustard tin with contents

A very unusual paper labelled tin from J J Colmans of Norwich. Instead of being their ordinary mustard powder. This is for their medical bath mustard. With the instructions on either side for a mustard plaster or mustard bath,  not a tin I have seen before. Complete and sealed with the contents 

condition 

some wear to the paper label and fading but a lovely rare tin with the contents.

any questions please feel free to contact me 

Thankyou