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standards
A speed square or rafter angle square is a tool that can be used as a saw guide. The purpose of this tool is to guide the saw when making short 45 and 90 degree angles.
For coins, you have to identify the type, denomination, date, mintmark and variety of each coin. Then you have to determine the condition, from Poor-0 to Mint State-70, according to ANA standards. With this information you can look up each coin in many price guides - for US coins, numismedia.com is a good online guide.
UN/NA number 1075 or 1978, guide number 115
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