Antique Carved Swan Arm Chair

I am selling a pair of chairs for a friend. PHOTOS BELOW. She originally purchased them from an antique shop, but the owner couldn't tell her anything about them --- only that they were "antiques".

The arms are carved swans and the legs are decorated with carved fans and bell shapes. The arms are two separate pieces, connecting at the curve with peg joints.

I have looked all over the internet for furniture with carvings like this one. I've found swan armed chairs, but they are large and complex carvings with the heads in an upright position, (instead of a reclining downward position).

My questions are: (1) How can I tell if this is an antique or a repro? (2) Does anyone know where they might have been made? (They have been reupholstered, and there aren't any identifying labels.)

Thanks for any help you can provide!

Beth