WW1 Period ''Toc H'' Soldier's Rest Centre Sign

An early hand painted Talbot House (''Toc H'' in military phonetic alphabet spelling) sign which may have been used at a soldier's rest & recreation centre on the Western Front during WW1.
The steel/tin sheet sign measures 20'' x 20'' (approx. 50cm x 50cm) and bears a well detailed painting of an ancient oil lamp known as 'the lamp of maintenance' and still used today by the international Christian movement.
The sign certainly appears to be 100+ years old, with much fading, scratches and rust damage, still has remnants of dead Ivy stems attached and left as found.
What leads me to think it's possibly military connected is the khaki colour background, designed not to ''shine like a beacon'' in a war zone, just simply confirming a location, the sign was obviously saved by the organisation and re-used in the post-war period in bold yellow (more like a beacon) .
Why wasn't the original face painted over ? was it saved for a historical reason? unfortunately there is no provenance with the sign to say it was used in Belgium or France from 1915 on, if there was it would be priced much, much higher.
A quick online search into the history of ''Toc H'' during WW1 is highly recommended.
Please study the images in regards to condition.

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SORRY UK sale only.

Code: 51350