I believe that Len Ingram, not Hilary Stone, is the marque enthiusiast for hetchins. You should contact him.
Ken
>From: OROBOYZ@aol.com
>To: rydjor@smig.net, GRIFFKS@aol.com
>CC: classicrendezvous@bikelist.org
>Subject: Re: [CR]hetchins serial no.
>Date: Wed, 7 Feb 2001 16:37:07 EST
>
>In a message dated 2/7/01 3:58:49 PM Eastern Standard Time, rydjor@smig.net
>writes:
>
><< I did in fact find the serial number on the
> steerer tube and it is H7063. Does that help with dating it? >>
>
>In a message dated 2/7/01 3:58:49 PM Eastern Standard Time, rydjor@smig.net
>writes:
>
><< H7063. >>
>
>According to my charts that are derived from Hilary Stone (I hope he will
>chime in soon.) your bike was made in 1967. It is a close sibling to two of
>my own...
>
>FWIW, four digit numbers started in 1962 (Had H plus 5 numbers before
>that..)
>
>1962 = H2000-
>1963 = H3000-
>1964 = H4000-
>1965 = H5000-
>1966 = H6000-
>1967 = H7000-
>From 1968 till the late 1970s things went into a bit of confusion (Again,
>maybe Hilary can enlighten here...)
>
>Dale Brown