It seems during Petrie's season at Tanis he also collected material from this site which he also distributed to museums. Petrie admits in the excavation report that what was distributed to museums was a combination of things he bought and excavated.
Links
[1] https://egyptartefacts.griffith.ox.ac.uk/resources/egypt-exploration-fund-eef
[2] https://egyptartefacts.griffith.ox.ac.uk/people/w-m-flinders-petrie
[3] https://egyptartefacts.griffith.ox.ac.uk/node/1177