There is an issue at the base of each ball finial. Where the ball attaches to the shoulder on one side (same side on each candelabra), there is a shallow cracking at the attachment point. The consistency of flaw type and being in the same place on both, gives rise to the possibility of that being a manufacturing issue. I have photographed both spots. I spoke with a very knowledgeable Steuben collector.
Who said the glass cracks may be made-in-the-making inclusions. Washing in very hot water may also do that. I have had these several years, and they have not changed, i.
There is a 1'rub' in one spot, see photo. The display of these American Art Glass works is wonderful. The item "Steuben Signed Crystal PAIR 2-Light Candelabra Candle Holders Rare 1942 Shepherd" is in sale since Saturday, April 28, 2018. This item is in the category "Pottery & Glass\Glass\Art Glass\North American\Steuben". The seller is "bluebliss" and is located in Sparta, Tennessee.This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Israel, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Bahamas, Viet nam.