If you examine a piece of pressed glass you will always find either two, three or four seams running through the glass, although sometimes the seams were well hidden in the pattern. When manufacturers began producing pressed glass (1850-1910); patterns ranged from very plain to very elaborate cut glass imitations.

When did glass start having seams?

Dating Bottles with the The concept is that the higher the side mold seam on the bottle the later it was made - at least in the era from the early to mid 19th century until the first few decades of the 20th century.

What kind of glass has a seam?

Pressed glass. Most pressed glass has a seam, which is a thin line along an edge. The mold can produce various designs, patterns and even a pattern mimicking hand cut glass.

How can you tell real cut glass from fake?

Cut glass will have sharper detail with a more defined pattern, whereas pressed glass will be smoother and more worn down. Look for mold marks. Cut glass will not have any mold marks and most pressed pieces do unless they are upper-end pieces and someone took the time to remove them.

How can you tell if milk glass is vintage?

Determining whether your milk glass piece is old can be challenging, but there are a few clues:Look for the ring of fire. If you hold old milk glass up to the light, you should see a rainbow of subtle colors. Examine the texture. Watch for markings.

How can you tell if a glass is handblown?

How can you tell if a vase is hand blown?Pontil Marks. A pontil mark, also called a pontil scar or a punt mark, is left on a piece of hand-blown glass when the glassblower removes the working rod or pontil iron from the glass object.Slight Irregularities.Air Bubbles.Apr 21, 2020

Is any pressed glass valuable?

Despite the recent trend for retro designs, pressed glass remains one of the most undervalued types of glass out there. Pressed glass is often found for very cheap and even antique pressed glass can go for just a few dollars.

How can I tell if my Waterford Crystal is vintage?

Since 1950, each piece of Waterford crystal has been stamped with the company logo. Resembling a stencil pattern, the Waterford name is slightly opaque. On a wine glass, its found on the underside of the base. If the piece is older, a magnifying glass may be necessary to find the stamp due to wear.

Whats the difference between cut glass and pressed glass?

Cut glass will have sharper detail with a more defined pattern, whereas pressed glass will be smoother and worn to the touch. Cut glass will not have any mold marks and most pressed pieces do unless they are upper end pieces where someone took the time to remove them. Feel the overall weight of the glass.