Why would anybody glue part of a forewing of a different species onto a hindwing? Surely anyone would notice this!
A couple of years ago I asked him a question for more detailed data on a specimen he listed on eBay. He responded that people who ask such questions are always very difficult and asked me not to bid on any of his auctions!
A friend of mine exchanged a specimen with him at a fair a couple of years ago, he's now listing it on eBay with different data to that it was supplied with!
Oh dear, yes, I hadn't noticed that the hindwing is actually part of a forewing of another species. I had assumed that it was a hindwing of something else. Shows how little I know about this particular group.
As for switching data on a specimen, that's not good at all.
By the way, this butterfly (on eBay) is NOT a Heliconius but Lycorea halia (Hübner, 1816) (Danainae) at least regarding three wings. Looks like Lycorea halia discreta Haensch, 1909 from Brazil. The fourth wing (forewing) comes from an Ithomiinae (Mechanitis or Melinaea sp., I would have to check knowing that these Ithomiinae show many individual forms). Both, the Danainae and the Ithomiinae are very common.
Here is the nominal subspecies : Lycorea halia halia (Hübner, 1816). Montagne de Kaw, Patawa (french Guyane), February, 28, 2019.
And here the brazilian subspecies : Lycorea halia discreta Haensch, 1909. Sertao de Barra do Una (Sao Sebastiao, SP). February, 16, 2012