Any Thoughts On This Blue Toy Elephant?

My guess is this little fella dates back to the mid-1970s. He sits on a shelf in my office and I don't really know what he came from (was he in a set of rubbery toys?). All I know is he was made in Hong Kong and he's been with me for a very long time.

It's possible he's from a set. I say this because I can't imagine he's the sort of toy bought individually. Of course, I could be wrong. As to a value, I have not got the foggiest. There's a collectors market for everything, including elephant fans. Similar items fetch between £10-40 on the vintage circuit on Etsy. Somewhere in there is a reasonable starting point, but I think we'd need to know more. There's certainly sentimental value for me.