http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=624&item=3724110916
I didn’t ever get round to teaching our Women’s Institute and have no need for these so ebaying them. E-mail of board for any info thanks. 
OT stands for Off Topic. This is a whistle board. Your post is, most certainly, NOT OT.
That’s very true. Should have occured to me. Posted after searching for an hour for a Hymn so brain addled I think.