Pontil marks on glass. New and Old Marks on Glass from Eastern Europe

Glorious Art Glass of Whitefriars: Pontil Marks

Pontil marks on glass

Forgeries of diamond-tip marks appear most frequently on inexpensive crystal made in Eastern Europe. Though likely fire polished, this bottle still has the pontil scar in evidence. The glass tipped and blowpipe pontil scars below are commonly referred to by many as an open pontil. This is an early bottle, but it is not a pontiled bottle. Specifically, the pictured base shows the ring shape to the pontil scar, the continuity of the base surface inside and outside of the ring, and the the base mold line distinctly continuing inside the ring, Click to view the entire bottle which shows that the diameter of the neck is approximately that of the blowpipe pontil scar. The cut-off line on a Pinch Pontil is much straighter and usually much shorter than that seen on the Crease Pontils discussed below. Fire polishing was done to remove tool and mold marks and to achieve an esthetic shiny surface to the glass much like later turn-mold bottles achieved through a different process Ketcham 1975; Toulouse 1969.

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Guidelines for Determining the Age of Antique Bottles

Pontil marks on glass

In the majority of reproductions we've handled, the bottom is almost always different. The name now applies to most slag- type marbles that have pontil or shear marks. This 19th century bowl has a somewhat faint ring pontil. Glass Fishing Float, probably Japanese. The same mould could be used to make bowls, baskets, rose bowls and vases in some cases. I do not think it's a pontil mark, but the remnants of where the gather was twisted as it was withdrawn from the batch and clipped off by the gaffer's assistant. The only genuine iridescent Steuben that is marked with the acid stamp is light shades.

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Pontil Scars

Pontil marks on glass

Bottles with such markings date from approximately 1910 to 1960 Other Guidelines Specific embossing found on bottles can be an immediate indication of age. I have a round glass bottle with an internal wooden screw stopper. Many of these are Regular Pontil Transitionals that the manufacturer took the time to grind the pontil off of. All original engraved marks with Loetz or Lötz are wheel engraved. If you find a piece of glass that you believe may be Blenko, do a quick screening for typical Blenko details before you start scouring the old Blenko catalogs to identify your piece. Click here to view examples of common defects and flaws.

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Glorious Art Glass of Whitefriars: Pontil Marks

Pontil marks on glass

Check the transparency by holding the glass up to the light. Click to view an illustration of a bare iron pontil attached to a bottle base. Click for a picture of a 1850s liquor bottle base that exhibits a distinct blowpipe pontil scar in the middle of the base surrounded by a distinctly separate and larger round glass tipped? Satin glass often losses the mark during the sandblasting process used to make the finish satin. This denotes that the mould originally belonged to a company other than Fenton. A likely reason for this is that the first pontil attachment blowpipe failed and a second, different sized pontil rod was utilized in finishing the bottle. Accidental dips, slumps, or burst bubbles are never present.

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Is this a pontil mark?

Pontil marks on glass

Forged propeller marks applied to pieces which are offered as Webb, are fairly common. We offer excellent customer service in terms of fast reply in several languages both by email and by telephone, attention to details and customer wishes. For example, fruit jars made in the third and forth quarters of the 19th century. Floats are often used as decorative accents in homes. Evidence that the tip of the iron rod was patterned is sometimes seen in the mark left behind, like the hatch markings shown in the iron pontil mark pictured to the left on an 1850-1860 bottle. Food stains can be under the glaze, usually surrounding a flaw, or over the glaze. .

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The Pontil Scar

Pontil marks on glass

Murano is a small island in the lagoon of Venice, where the art of glassmaking has more than 1000 years of tradition. A smooth pontil is sometimes referred to as a ground pontil. Many have Regular or Ground Pontils and are black, or dark green, with white. Original marks, even those with naturally occurring wear, have smooth, evenly formed letters that are legible despite being worn. The sand pontil will usually though lightly cover a much larger diameter area on the base than affected by the other three empontilling methods covered here although iron pontil marks can be wide also; see the next section.

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Pontil Scars

Pontil marks on glass

Some early 19th century bottles - particularly decorative bottles intended to be kept indefinitely - were often as the final step in the production process. It is referred to as a a ring pontil and increases the value of this bottle by 10 times. This mark is at times incorrectly called a graphite pontil. This mark was formed when the hot glass gather on the flared or ball shaped tip of an iron pontil rod was slightly cooled then dipped in sand or small glass chips prior to application to the bottle base Van den Bossche 2001. Examine many features before deciding whether a piece is new or old. Photograph courtesy of Kamichia Kinzie, GlassFloatJunkie. By 1870, the likelihood of any given utilitarian bottle being pontil scarred was no more than 5% and by 1875 it was essentially zero Baldwin 1973; Boow 1991.

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