Corelle sugar and creamer set made by Pyrex. This set, numbered 605, is the "Large Cream and Sugar" set and is from the Winter Frost White line that was available from 1970 to the end of Pyrex opal glass in 1986. This set replaced the smaller sugar and creamer sets that used (my favorite!) #714 bouillon cups for the sugar bowls.
This set here is in excellent condition with little wear and no chips or cracks. The sugar bowl is missing the plastic lid, but would still work will with Splenda packets!