The main problem with this is that is you google "Robin comic merchandise" you get an awful lot of stuff relating to Batman's young assistant, grrr.
There's currently an unboxed version of this truck for sale on ebay (see image below) here for £130! And it's incomplete (no paintbrush & no posters)
UPDATE, UPDATE, UPDATE, UPDATE, UPDATE, UPDATE
Number 1 - Richard Lion, Peggy, Henry and Pug
Number 2 - Dumpy, Golly and Honeybun
Number 5 - Johnny Bull, Woppit, Mokey, Tiptop and Bingo, Bango and Bongo
Not sure if this is the 6th book they produced or a book for a child's birthday - anyway, it's good to know it exists...now I just need ot find book 4 and 5 and add them in
Further images c/o friend of the blog Jeremy Briggs...here's a Robin club badge with a leaf (I think) denoting that the member has re-subscribed to the club...
Jigsaw #3 'At the zoo', now I just need to find images on jigsaw numbers 1, 2 and 4