Antique Pictorial flower Button - An Iris - Dyed Pearl Shell with Brass escutcheon.  The shell is mounted on silvered brass with escutcheon pins. 

Large NBS size at 34.5MM (1 3/8") wide.  "U" shaped brass wire shank.

The button is, except for its oval shape, exactly like the round button show in the Big Book of Buttons on plate 253-10.

I am happy to combine multiple purchases into one shipment to save buyer on postage.

Thank you.