But it is a bit ambigious as it say retired are availible if you order more than 20 I presume this would mean they from Maleras?
MJ does a large range of animals and plants - so his Maleras butterfly could be different from the earlier Kosta version: I just don't know if he would be allowed to produce the same design, done for a company, later in his own business.
Whatever - it is not on their stock list any longer, but if a larger quantity is ordered, they'd do it for you.
Has your butterfly got a ribbed edge?
Yes - vertical - though minute.
BTW - dimensions of my butterfly are 91 mm dia and 23 mm high, and I guess the 72 in "99/72" implies the year it was made.