Duncan's plastic Imperial number 1400 on a black and yellow card, polybaged. The card style was one of the last designs released by the original Duncan company before going bankrupt in the mid 1960s. The Imperial–still being made today (2020) by Flambeau–has been a venerable workhorse of the Duncan product line sold around the world.
Note the upper-left corner of bag is torn off. When buying polybagged Duncan yo-yos, check to ensure that the bag is completely intact; no cuts, tears, or seam openings. The stamped gold seal on the yo-yo is probably an 8 out of 10. Not perfect but not bad either. Yo-yo 10/10; seal 8/10.