My appologies for the skant intormation on the Hetchins Nulli Secondus handlebar extension (stem). It is a 4" steel stem with Nulli Secondus lug patterns. The condition appears to be perfect looks like he had it stripped for re-chroming. All our better makers made handlebar extensions to match there frames. Gillot Fleur d Lys, Ephgrave No.1 and Thanet Silverlight etc. I have only ever seen two other Hetchins extensions a Magnum Opus and Experto Crede Superb No.2. This is very rare any ideas to it's value.
Best wishes and be lucky. Michael Butler Huntingdon UK.