antique whistle research into whistology

it is interesting to whistle students that details become more focused as collections grow and comparisons can be made finally.

Take for example the lowly TOOTHGRIP – not something aften discussed or thought about for sure…..

We remember that a selling point for Metrpolotan Police whistles at first, was supposed to be that beauforts  in general had no toothgrip for keeping the hands free, so they replaced them with a model that did. ( Of course Barrall, Hudson, DeCourcy all manufactured beauforts for many years after the Metro that DID have toothgrips didn't they ?? )

On the other hand virtually ALL round whistles that were used for police, railway, fire brigade, prisons, and military purposes have never had toothgrips !!!!

What about escargots ??