This auction has finally dropped in price from about $24.60 for a number of weeks to a quite reasonable (or mistakenly) $4.60.
http://www.trademe.co.nz/Antiques-collectables/Pins-badges-patches/Pins-badges/auction-359900963.htm
"Measures 25 mm in diameter, manufactured by Moller & Young Ch-Ch.
Excellent condition."
Of interest to anyone? Someone must have belonged to the group.