Name that tune!

Yorkshire Post and Leeds Intelligencer
Friday 16 June 1939

Correspondence
SUNG AT SILCOATES

Sir, The head master of Silcoates School, Wakefield, Mr Sydney Moore, will be grateful to anyone who can give him any particulars of a song, which used to be sung Silcoates 50 years ago – “When this old coët (coat) war new”. I visited Silcoates recently and said I would try to get some information.