VERY RARE ATTRACTO MECHANICAL STORE DISPLAY FOR BIRTHSTONES, THE BUTTERFLY WINGS MOVE BACK AND FORTH AS THE STORE OFFERINGS GOES ROUND AND ROUND UNDERNEATH IT. FROM HUDSON VALLEY ESTATE COLLECTION, NO KEY, WHEN PENDULUM WEIGHT IS PUCHED BACK, WINGS MOVE FREELY. MADE BY THE ATTRACTO COMPANY IN PHILADELPHIA, PA. NO BACK COVER, CLOCK MOVEMENT SPRING IS TIGHT, SO WE DID NOT WIND. MEASURES 20" HIGH X 14" WIDE X 5" DEEP. I CAN'T FIND ANY RECORDS OF THIS BEING SOLD, I CAN'T IMAGINE THERE ARE MANY THAT SURVIVED.