Tupperware number 1459.
these are 4 lids for the old tupperware square away sandwich containers.
they are not for the square rounds, those are different and smaller lids.
these lids measure 6 1/4 x 5 7/8ths inch and are opaque.
they are in nice shape, no cracks, but a little discoloration on some, from time.
still perfectly usable, no tackiness.