Two 40 centimes Empire Non Dentele covers from Paris

Both letters are from the firm Lecuyer & Co. The first letter bears a Paris J postmark and is from 1857.

Here is the back of the cover.

The routing postmark and the Cosne postmark are both legible.

Here is the stamp.

Here is the bill.

Here is the second cover. This letter is from 1856.

Both postmarks are legible.

Here is the stamp.

Here is the bill.