I had a look at the tin whistle on your web page - and I think it was made in the 19th Century if you check the Harrods catalogues for this period there are several simular whistles and flagolets there.
Did you know Debbie Harry played a Penny Whistle in her folk days? with Wind in the Willows Folk-Rock Group - before her Blondie Days! well so I was told.
Talking of Debbie (which I always do!) I found a site on the web which has loads of reviews pics etc....
Anyone remembers Debbie's Folk Days?
How the above is of use