USPC (and Burt) call any chip with an inlay a crest & seal. Whether the chips have a small key, T-mold, hub, arodie, small crown or plain mold, if there is an inlay, it was called a crest and seal.

Under that broad (and for collecting purposes, useless) definition, your chips are, in deed, crest and seals.

For collectors of crest and seals, your chips lack 2 important characteristics for what collectors refer to as crest and seals: There is no printing on the inlay nor is there a clear celluloid or, later on, plastic protective film (or shield)

Your chips are plain mold chips with a reverse die-cut pressed into the chip.