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BLUE DIAMOND
auction archives
bullion - products we buy & sell
FFL for firearm transfers
forms
Absentee Bid Form
Consignment Agreement
Consignment Inventory Form
Firearm Shipment Form
Texas Resale & Tax Exemption Certificates [?]
Proxibid
how to bid on Proxibid
Proxiblog Honor Roll

BULLION
IRS Form 8300
our bullion inventory
N.Y. trading hours
monetized bullion
American Buffalo gold coin
American Eagle coins
Canadian silver coin melt values
fine & gross weights
U.S. silver coin melt values

COINS (see "NUMISMATICS")

CURRENCY
U.S.
Bureau of Engraving & Printing
silver certificates
World
examples
world banknote values

EXONUMIA (Medals, Tokens, etc.)
categories
medals
so-called dollars
tokens
trade tokens
Anillo restrikes

FIREARMS
Colt date by serial number
AR-15s
classic firearms
Sig P210 serial numbers
Winchester
serial numbers
world proofmarks

HANDBAGS
Chanel serial numbers
Louis Vuitton date codes
Prada authentication

JEWELRY
karats, carats & ounces
what's it worth?
brands
Black Hills Gold manufacturers
Cartier®
Coach®
David Yurman®
James Avery®
Pandora®
Ruser
Tiffany & Co.®
costume jewelry
Chanel hallmarks
DeLizza & Elster (aka D&E or Juliana)
diamonds
the 4 "C"s
color grading scales
definitions
millimeter-to-carat calculator
millimeter-to-carat table
valuations
verify a report
AGS
EGL USA
GCAL
GIA
GLA
GSI
GSL
IGI
IGL
Leo
gemstones
dictionary
GIA Gem Encyclopedia
identifier
library
meteorite tests
Mohs' scale of hardness
refractive index table
specific gravity
hallmarks
Designer hallmarks
Mexican hallmarks
Native American hallmarks
Swiss gold & silver hallmarks
pearls
Wikipedia
MEDALS (see "EXONUMIA")

NUMISMATICS (Coins)
Gateway Coin Club
glossary
history
NGC certification verification
Stack's prices realized
world coin values
U.S. coins
coin images
errors
grading (NGC)
grading (PCGS)
modern commemoratives
PCGS price guide
Which Coins and Currency Are Valuable?
U.S. Mint
cents
1943 bronze
1943 zinc-plated steel
quarters
state quarters
Wisconsin state quarter error
dollars
Presidential $1 coins
Canadian coins

SILVER
hallmarks
flatware
sterling pattern I.D. guide (A-N)
sterling pattern I.D. guide (O-Z)

SPORTS
authentication
reputable & banned authenticators

TOKENS (see "EXONUMIA")

WATCHES
batteries
pocket watches
identification
wristwatches
Omega®
official Omega® website
serial numbers
Rolex®
official Rolex® website
serial numbers
Submariner





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