The source of the studied specimen is the To The Stars Academy, an independent research organization headed by Blink-182 frontman and UFO fanatic, Tom DeLonge. The organization said in a press release that “the material is clearly engineered with distinct layers of MgZn and Bi at structured thicknesses only microns thick” and “there is no precedent for this structured combination of materials.”

The AARO and Oak Ridge say the material is likely an early test of new aerospace alloys from the 20th century. “There was widespread domestic research on [magnesium] alloys for airframes, engines, weapons, and delivery systems starting in 1915 and peaking during World War II,” the organizations reported.

Neither the press release nor the Oak Ridge report mention Roswell, New Mexico, but pinpointing the recovery date of the material to 1947 makes it likely that whoever gave the sample to To The Stars has claimed that’s where it came from.