I'm calling this a mixed lot because although the lid fits perfectly on the larger jelly/jam jar, they are not a matching set. 

The lid is opalescent, as is the two handled mini sugar bowl. 

The jar and the small creamer are not; they are solid white. 

All four pieces look to be high quality Fenton, but are unmarked. Fenton introduced the hobnail pattern in 1939, but only started adding a logo in 1974. The earliest pieces do not have the Fenton logo. 

I have other Fenton pieces listed and will combine shipping. 

Thanks for looking!