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Estimating the Age
of a Bottle
 Estimating
the age of a bottle can seem confusing. First understand that the
manufacturing process changed over time and often overlapped.
Different tops, seam marks and characteristics can all be used to
guide the collector to correctly aging the bottle. For example if
a bottle has a mold seam mark and applied blob top its from the
late 1800’s if it has a machine made crown top it could only date
back to early 1900’s. The mold seam on the side of the bottle is a
key factor to estimate the age. Think of it as a thermometer. If
the seem stops before reaching the lip, then the bottle is (Blown
In Mold) BIM, and has an applied top, and can date to the late
1800’s. If the seam runs through the top of the lip, then the
bottle was manufactured in a full height mold in an Automatic
Bottle Machine (ABM) and dates to after 1903. Do not worry about
remembering all of the details. I have listed and illustrated many
of the most common characteristics with a corresponding time line
for easy reference. You should however familiarize yourself with
the most common types of bottles and bottle characteristics. For
example, when I’m underwater exploring a submerged dumping ground
or harbor I often encounter hundreds of bottles on a single dive.
Most of these are modern but mixed amongst them are some real
treasures. To add insult to injury many times it’s difficult to
see the seam marks due to marine growth or poor visibility. What I
do first is look at the bottles top. If its a blob top I know
immediately it was blown in a mold and the top applied after.
These are keepers and usually date to the late 1800’s. If is a
crown top I know its most likely a machine made bottle no older
than 1903. I also look for applied cork tops although without
being able to see the seem mark its harder to accurately age these
while still underwater. Bottom line just by knowing the basics I
can fill my bag with 1800 vintage bottles rather than younger
counterparts.
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 Hunting
Antique Bottles in the
Marine Environment.
By Capt. Dan Berg
Softcover, 5.5x8.5", 98 pages
printed in full color. $19.95 +P&H
Hunting Antique Bottles in the Marine
Environment is the complete field guide for
finding and identifying antique bottles. Capt.
Berg has been searching for antique bottles in
local lakes, rivers and on shipwrecks for over
thirty years. Learn not only how to find
submerged antique bottles but also how to clean
them and how to determine how old they are. This
text is packed with historical information that
shows how bottles were produced and how each
manufacturing process left distinct marks which
can be used to accurately estimate any bottles
age. Capt. Dan has heavily illustrated this text
with over 200 color images depicting the types
of bottles that can be recovered by searching
local waters.
 He
also uses over 10 unique 3D diagrams designed to
give a better understanding as to the time line
of glass blowing and bottle manufacturing. These
3D mold images are combined with drawings of the
bottles they produced and highlight the distinct
mold seam marks each created. This informative
text tells all the tricks of the trade that
until now have only been learned through years
of experience. Bottle collectors, scuba divers
and anyone interested in exploring the marine
environment for these historic treasurers will
reference this text often as they search for and
collect antique bottles.
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Antique
Bottle Identification Guide Sample
Pages
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Sample
Pages
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This title is also
available as a downloadable ebook
click here
for details on all of Capt. Dan's
downloadable products.
Hunting Antique Bottles
in the Marine Environment.
By Capt. Dan Berg
Softcover, 5.5x8.5", 98 pages
printed in full color. $19.95 +P&H
This book is also
available as a downloadable ebook
only $9.95
5.7 MB instant download, printable PDF file
.
.
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Hunting Antique Bottles
in the Marine Environment
Bottle Collecting
Bottle
Characteristics
How bottles were made
Bottle Value
Bottle Types
Screw Top
Painted
Crown Top
Blob Top
Hutchnison
Lightening
Bromo seltza
Black Glass
Bitters
Whiskey
Medicine
Poison
Beer
Saratoga
Soda
Codd
Coca Cola
Round and Torpedo
Flasks
Inkwells
Ceramic
Milk
Water Hunting
Scuba Diving
Tools
Shipwrecks
Harbors
Ferry Piers
Dump Sites
Scuba Diving
Cleaning Bottles
Tumbling
Estimating Age
Tops
Mold Marks
Mold Mark Chart
Bottom
Embossing
Patent Numbers
Makers Marks
Just how old
Age Estimating Chart
Glossary of Terms
Scuba
Equipment
Training Agencies
Equip Manufacturers
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