Mold errors are not always limited to misspellings or the incorrect positioning of trademarks. In some cases, the mold error may simply be presence of an unintended mold marker or slug plate marker. To some extent, the presence of a slug plate impression falls into that category, because slug plates were used to allow the glassmaker to interchange embossing on similar molds. Nevertheless, we note the presence of slug plates in describing bottles, because the impression is clearly visible.
These types of variants among Warner’s Safe Cures set them apart from each other. In the years since Mike Seeliger published the first Warner’s guide, a variety of errors have been noted and documented in guides like Ojea/Stecher. One such mold anomoly is the “Four Circles “Safe Kidney & Liver Cure.
The “Four Circles” Kidney & Liver Cure is cataloged by Ojea/Stecher as WRG 12B. It appears only in the K&L Cure with the blob lip. The circles, which are each about the diameter of a quarter, appear behind the Kidney & Liver Cure embossing. Although it has been described as a slug plate, in all likelihood the circles represent mold markers and later molds were corrected to remove the unintended impression. This particular variant is rated as “Good” by Ojea/Stecher and is, in fact, harded to come by than is more common (and error-free) cousin. The normal Kidney & Liver Cure usually fetches $20-$50 depending on condition and color. This variant usually goes in the $70-80 range.