Telling The Difference Between Proof Edges

These are not even impared proofs. Look just like business strike coins. The 1969 is a D, so it's not a proof.

I put the 77 next to the 69 d to compare them . I am not asking about the 69 d. . All I know is that it looks wayyy different than any other 77 p.... Roosevelt is smaller and there is a different finish. I'm wondering if this should of had a mint mark..

I am guessing you are wondering if it is a 1977 no "S" proof dime that somehow got released into
circulation. My first point would be, I have never heard of a 1977 No "S" proof dime.
Known examples of no "S" dimes are in the years 1968, 1970, 1975 and 1983.

I agree with coop .. sorry to say .. but to me it looks like a regular business strike.

...that would be why I put it next to a 1969 d. And a fellow 1977 p. Let me clarify. The pics I have are of the 1977 with no mint mark that looks like it should have one. It is different than other 1977 p BUSINESS strikes. The 1975 Proof in question I do not have pics of yet , it is buried beneath boxes ,but is quite shiny on the high points ....

Yes the 77 is a business strike, but not a normal one. It looks NOTHING like a regular 1977 p. I'm saying it is A POSSIBLE 1977 D business strike with no mint mark. The proof in question is NOT PICTURED.

That is to be expected for 35 year old circulated coins, the right one is dirtier and more worn than the one on the left. The head is the same size and it is perfectly normal for the coin to not have a mintmark, that just means it was minted in Philadelphia(no P mintmark on dimes until 1980).

Another thing that affects the apparent size of the devices is die wear. It is hard to tell on such well circulated coins but early and late die state coins do look different so two coins from different die that have seen different circulation should not be expected to look identical. A no D Denver coin would have been produced by a struck through event, with grease filling the mint mark. In that case there would usually be a vestigial mark that could be seen under proper lighting and magnification. Since these coins are from a year where no P mint mark was used, there would be no way to tell a coin struck in Denver using a Philadelphia die from one struck in Philadelphia so the notion of a truly no D Denver strike is sort of meaningless.

Thank you guys very much , I have loads to learn about rosies !