[bess55]

Steve, I think you're referring to the Turner & Simpson 'T&S' mark, with comes with just the characters and also with the characters within two interlocking rings. If it helps I have:-

Royal Engineers
Brass slider 'T&S', brass slider (T&S), alloy slider 'T&S'

Royal Army Ordnance Corps
Brass slider 'T&S', brass slider (T&S), alloy slider 'T&S'

It's possible that the alloy slider only came with the characters alone ( I.e. no rings).

That said, just because I dont have them means nothing, there is every likelihood that somebody out there has alloy with characters and rings on these regiments.

These sliders do of course appear on other regiments.

Regards all, happy easter

Bess