Which peice of feathered edge would be oldest?

[Barrydang]

Two different styles of feathered edge pottery. Which would be older? First peice I found of the one on the left the bigger peice. Most items I find here are around the 1830s these are coming out of a suspected trash pit.

 

[villagenut]

Pearlware was out of production by about 1840 and had lost popularity even before that....but the date range for both shards are similar, early 1800s. Shards like these found in old trash pits can be older, for by the time the ware was produced to the time it was broken and discarded, time would have to pass....sometime this would be decades. This is called "time lag" and would be considered an heirloom artifact, based on its long duration time in the household. But I would still put the date as teens to 30s