I am bit of a Clarke Original fan, and have just received an old C whistle bought on e-bay for under a fiver ! She plays wonderfully, far better than my contemporary Orinigal C. The whistle is styled in the old Clarke livery ie black lettering on bold gold surround, gold diamonds and a gold band around the airway. The wooden fipple has been sealed in place with a black substance around the edges. I have attemptedto attach some pictures but my inept IT skills have let me down !
Dating a Clarke? Is that a new take on “I love my whistle”? 
I was thinking the same. I’m awful fond of my Clarkes (sweet sounding black D and nickel C whistles, chosen after some trial and error) but choosing just one of them to date would be excessive, IMO.
Lecherous, maybe. But I’d still opt for the Clarke with the bloom on 'er cheeks.
'Tis good manners to ask the whistle’s parents permission first. Some parents will provide a maiden aunt as a chaperone.
Birthdate ca. 1990 means that both are over the age of majority. I’m in the clear!
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In fact, I still have my very first whistle, a Clarke that came in the Bill Ochs book+tape+whistle blisterpack. In traditional C, natch. Sadly, that whistle didn’t survive the difficult ‘teething’ years with it’s fipple unsquished, so it doesn’t get played much.
Clive
That’s the problem when you ask a question in a forum already certified as a lunatic asylum. Sometimes you get a valid or useful answer. Sometimes the thread takes an immediate left turn into the Twilight Zone.
I don’t imagine there’s any way to date your whistle Clarke has been making them in that pattern for a very long time. They’ve no doubt stamped them out by the thousands daily. Absent a serial number, it could just as easily be relatively new as a well-cared-for oldtimer.