The British Library has sheet music described thus:

COPPERS WILL TURN INTO SILVER.
Author: Jim Smith
Publisher: ©1928.

[It's a shame the BL is so stingy with information. However, a very useful website called 45cat.com contains comprehensive information about a 45-rpm recording from 1988. From an image of the record sleeve:

"Sung at Christmas during the Twenties in every Birmingham [UK] pub, cinema, theatre and dance hall, bookmaker Jim Smith's song helped thousands of needy kids by raising thousands of pounds for the Birmingham Mall Christmas Tree Fund. But it faded away with World War II and the composer's death.

"In 1988, 60 years after being composed, a fluke rediscovered it. Harry Hawkes of The Birmingham Post & Mail … [performed research which] led to Jim Smith's family, including his 91-year-old widow, still living near the city. Through them he located the original Twenties sheet music and with the Christmas Tree Fund celebrating its centenary year, it was decided to revive and record the song.

"With Midland comedian and singer Malcolm Stent providing the vocal, Gordon Giltrap the arrangement and all instrumental backing, and a choir of local children from Grestone Junior School, Handsworth Wood, singing the chorus, the recording was made....

"Every penny from the sale of this record and royalties from its playing will be donated to the Birmingham Mall Christmas Tree Fund."