Early to mid 19th Century Bonnet

From the seller:

Beautiful early 19th C. deep Chinese red velvet ladies bonnet with a ruched brim covered with lots of antique ribbon work.  Inside the brim is lined with French lace which needs to be removed and hand washed.  The inside of the bonnet is lined in a cream silk which has deteriorated.  The hat itself is in excellent condition for age. It is a wonderful example of 19th C. millinery work dating to about 1840, a lovely example of early Victorian millinery work for display. 

From Me: 

I think this is a bit early than 1840's -maybe 1830's- but it's still pretty early for the 19th Century bonnets.