Wuestion on dime "reeded edge"

[Dozer D]

Found a good looking Canadian silver dime the other day while rim checking. I put it next to other U S silver Rosie's, but the reeded edges look different between the two. Do they both have the same number of groves on the rim, or does the Can have fewer which makes the coin rim look different. Just wondering?

 

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[kcm]

Found some info on this site:
Canada: 1953-Present 10 Cents (Bluenose Dime) - Type Set Coin Collecting

Here's a portion of what it states:
Mint Production Issues in 1968

During the 1960’s the price of silver soared and it was no longer affordable to mint coins with a silver composition.

With the price of silver climbing coins became more valuable for their silver content and exceeded their denomination value. Subsequently, silver coinage began rapidly disappearing from everyday use creating a coin shortage. In 1968 the Ottawa mint was working feverishly to meet the demand by running multiple shifts but it still wasn’t enough so a contract was established with the U.S. Philadelphia Mint to produce Canadian dimes. This represented the first time since 1907 that a foreign mint produced Canadian coinage and the only time since the Ottawa Mint open in 1908 that the Royal Canadian Mint had to rely on a foreign mint facility.

In a rush to meet the demands, little thought was given to the methods of minting at the Philadelphia Mint beyond composition, design & weight. No mint mark was used to differentiate coins minted in Ottawa or Philadelphia but the Philadelphia Mint used existing U.S. dime collars during the process resulting in a different reeded edge.

A reeded edge on U.S. coinage has grooves that are square whereas Canadian collars produced a reeded edge where the groves ends are V-shaped. Another distinguishing factor from the use of U.S. collars is the diameter, a U.S. dime diameter measures 17.91mm while a Canadian dime diameter measures 18.03mm.




'Tis a very good thing you asked this today, as Saturday's are the ONLY day of the week that I answer wuestions!