MFS was called to Cardiff the beautiful and capital City of Wales, to attend to the glass doors at the entrance of Simply Bare, a luxury city centre beauty salon which can be found in the 1902 Duke St/High St arcade http://www.simplybare.co.uk/

Both Singlo and the Duplo were manufactured by William Tonks and Son Ltd ("Star" brand builders hardware products), prior to the buy out of Tonks by William Newman which formed Newman Tonks Ltd.
As can be seen from the shots the Duplo has a square ACME pin and an unusually low piston compared with one from a 400.
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