Welcome aboard.
The '65 set really is "special".
They didn't know what to make in '65 to '67 so they did. These are neither proof nor Unc; neither fish nor fowl. They were made on the old proof set presses but in San Francisco. Most of the dies were carefully cut so are far better than normal business strike dies. They were used for only a few strikes and used as much tonnage as proof coins. Some of the dies were even sandblasted so they made cameos. Most of the coins were struck only once so are technically Uncs.
Indeed, they used dozens of different techniques and processes so there are a large variety of different finishes and textures to the coins and especially the 1965's.
These coins are widely overlooked because proof collectors tend to consider them Uncs and unc collectors tend to consider them proofs. In actuality they run the gamut from true proofs (rare) to coins that don't look much better than run of the mill.
Time don't fly, it bounds and leaps.