Your questions are great ones -- many collectors have the same or similar questions. I'll offer a few thoughts, but please understand that the US Mint (USM) and Royal Canadian Mint ( RCM) have made changes to the finish on the coins they include in their annual sets over the years and so a simple "one answer fits all" response unfortunately won't suffice -- I'll focus my comments mostly on current products.
I would say that US Mint Proof Sets and RCM Proof sets are fairly similar in terms of the finish of the included coins, they both feature frosted devices on brilliant, mirror-like fields. Current RCM sets feature mostly silver coins and a silver dollar with selective gold-plating (this wasn't always the case); the USM sets are available with either all base metal coins or with three silver coins -- neither set features any gold-plated coins.
Regarding "proof vs. proof-like": No, they are not synonymous. Proof coins are struck from specially-prepared planchets using specially-prepared/polished dies and are typically struck multiple times to ensure the greatest level of detail on the coins. As mentioned above, these coins have frosted devices (for example, the Queen's portrait) set against mirror-like surfaces and exhibit significant contrast between the two. While the finish on Proof-like coins is generally better than that on coins meant for circulation, P-L coins do not typically exhibit the level of detail or contrast of proof coins, though coins produced from "fresh" dies can sometimes come close.
Are Specimen Sets synonymous to US Uncirculated Sets? No. Current Specimen sets of the RCM feature brilliant or frosted devices on a finely lined field (sometimes called a "linen" field); the technique produces a nice contrast between the devices and fields but not nearly the contrast of proof coins. Current US Mint Uncirculated Sets are struck "on special presses using greater force than circulating coins" to produce a sharper, more detailed design on each coin; the coins feature a satin finish over the entire coin (devices and fields). [Source: US Mint website] So, the coins in these sets are produced differently and have a different look. Both Mints produce high-quality coins for their respective sets, I'll leave it to you to decide which (if either) is of higher quality.
BTW, beginning in 2011, RCM Uncirculated Sets contain "circulation quality" coins vs. previous sets which featured coins with a better quality finish.
I would recommend picking up a current Charlton's Guide (Numismatic Issues) to better understand all that had happened to these sets over the years.
Hope that helps!
I would say that US Mint Proof Sets and RCM Proof sets are fairly similar in terms of the finish of the included coins, they both feature frosted devices on brilliant, mirror-like fields. Current RCM sets feature mostly silver coins and a silver dollar with selective gold-plating (this wasn't always the case); the USM sets are available with either all base metal coins or with three silver coins -- neither set features any gold-plated coins.
Regarding "proof vs. proof-like": No, they are not synonymous. Proof coins are struck from specially-prepared planchets using specially-prepared/polished dies and are typically struck multiple times to ensure the greatest level of detail on the coins. As mentioned above, these coins have frosted devices (for example, the Queen's portrait) set against mirror-like surfaces and exhibit significant contrast between the two. While the finish on Proof-like coins is generally better than that on coins meant for circulation, P-L coins do not typically exhibit the level of detail or contrast of proof coins, though coins produced from "fresh" dies can sometimes come close.
Are Specimen Sets synonymous to US Uncirculated Sets? No. Current Specimen sets of the RCM feature brilliant or frosted devices on a finely lined field (sometimes called a "linen" field); the technique produces a nice contrast between the devices and fields but not nearly the contrast of proof coins. Current US Mint Uncirculated Sets are struck "on special presses using greater force than circulating coins" to produce a sharper, more detailed design on each coin; the coins feature a satin finish over the entire coin (devices and fields). [Source: US Mint website] So, the coins in these sets are produced differently and have a different look. Both Mints produce high-quality coins for their respective sets, I'll leave it to you to decide which (if either) is of higher quality.
BTW, beginning in 2011, RCM Uncirculated Sets contain "circulation quality" coins vs. previous sets which featured coins with a better quality finish.
I would recommend picking up a current Charlton's Guide (Numismatic Issues) to better understand all that had happened to these sets over the years.
Hope that helps!
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