G'day Gurney,

Just to round off your query - Bernard Overton's whistles (and those made under licence by Colin Goldie in Germany) are made of high quality aluminium ... probably aircraft grade.

I have two early Overton whistles (un-branded!) in standard 'C' and a low 'F' taht may be the first to come to Australia ... in the late '70s. These have a slightly narrower fipple and windway than his later ... branded ... models - and are rather "tight to play - but I got used to them more than 20 years ago. (I also have 3 more of his later models - Low 'D', low 'G' and high 'D'.)

BTW: I have seem a Colin Goldie low 'D' with hole spacing adjusted for smaller hands ... and it works damned well (... and the serial number was #666!).

Regards,

Bob Bolton