In the latest volume of BASP, there are two articles offering editions of "missing" papyri that once belonged to the collection of Erik von Scherling (hereafter: EvS), a Swedish-Dutch manuscript dealer who sold thousands of manuscripts to individuals and institutions in the 1930s.
EvS edited a catalogue called Rotulus, A Quarterly Bulletin or Manuscript-Collectors. EvS purchased manuscripts himself and sold them through his catalogue. Thus, the provenance and details of the original sale of most of the manuscripts are unknown. The EvS collection as a whole has been somewhat of a puzzle. We have a catalogue listing descriptions of manuscripts. However, once they were sold, their whereabouts became unknown.
Since the 1980s, Prof. Klaas Worp has done much to put EvS' collection back together. His article in the latest volume of BASP is yet another addition: "New von Scherling Papryi in Uppsala." This article publishes ten miscellaneous papyri purchased from EvS more than a half century ago and now kept in the university library at Uppsala. Prof. Worp actually cites a post from this blog in his first footnote, where I discussed a Coptic papyrus that surfaced on eBay a couple years ago.
The second article about EvS manuscripts is my own: "Three Unpublished von Scherling Texts in the McGill University Library." I came across these three documents (a Ptolemaic tax receipt on pottery; a private papyrus letter; a wooden mummy label) during a field trip with my students in 2013. This was my first publication of an inscribed piece of pottery and a mummy label. I enjoyed the research very much. For those interested, I have added the article to the the "Publications" section of this website.