Me and a buddy hit a SA thrift store and he spied this immediately. It has no movement and a replaced finial but is complete. The glass is hand painted. We looked up the comps on eBay and the prices realized in the hundreds. BTW...it was $9.99 but it was 50% off day. $4.50 cost.
Yes it is a Waltham. It looks like it was converted to electric a long time ago. You can see where the cord was cut. Based on parts prices the movement wil be expensive.