3965-100 PYREX Borosilicate Glass Diameter Filling Bell 100mm O.D. x 135mm 2 QTY

I'm not sure if used or not so listing as such. They were gotten with a bunch of other new pyrex lab glassware but these 2 have some residue on the outside of them. possibly from rubbing against something? I believe they are new but I'm not sure what the residue is.