Very nice decorative antique brass doorknob set. They have two holes in the shank on each side for adjusting to depth of door. They are not marked the manufacturer is unknown. Great classic Eastlake design. With nice egg & dart. Show normal wear for their age with great naturally aged patina that you can only get with age. Both set screws turn out and the knobs can be removed. Overall good condition. Please look over the pictures and ask questions when needed. Thanks for looking 

Measures approx.: Knobs 2 3/8" diameter x 2 1/4" depth

Shank: 1/4" diameter x 3 5/8" length

Doorknob assembled: 6 5/8" length x 2 5/8" exposed shank between knobs