The thread in question with the ‘white metal’ badge worn on a trench cap in posts #8 and #9:
https://www.britishbadgeforum.com/fo...Devon+Yeomanry
Devils advocate, can anyone say that badge is WM for definite?
Could just as easily have been a bronzed badge that’s been polished to ‘shiny’ brass/GM, or, may never have been bronzed. Cleeman’s slidered badge in post #2 looks to be a good candidate with no traces of bronzing at all. Perhaps in wartime they skipped that finish?
Cheers,
Luke