Do some artist signatures increase the value of the Glass?
Opinions differentiate on whether the signatures actually increase the value of the glass but most collectors definitely desire them. Some collectors only collect pieces painted by a certain artist and to them the signatures are very important. For example: Louise Piper, who headed and actually formed the current design department is one of the most recognizable artists. Her signature is highly sought after and prized by collectors and will often increase the value of an item.
