"German" Art Deco Lamp

Up for bids is this fine Deco/Nouveau lamp of an upended woman balancing a shade on the soles of her feet. The base is stamped "German" and apparently the shade is signed as well, but the seller cannot make out the name. The shade has large opalescent chunks of glass with red, green, white, and blue jewels that are evident once lit. The lamp is currently bid up to $456 and you can view more details here.