Brass Cash Registers
Top Signs
There are people that make reproductions so it is hard to tell. When I bought mine, the guy had a receipt were he bought the register at an auction in 1953 so I'm sure it is original.

Soon after this, NCR started making registers out of brass and they still made the glass top sign but with a cast brass frame. This was two parts that the glass was put in and then screwed together.  These were found in many sizes. I have never seen an original but I have bought many reproductions. Even these are very expensive. You will find these on both wood & brass cash registers. All of these are repro's. There are 2 pictures that show the front & back which points out that only one side of the glass signs are usual visible.