Going by registry numbers really seems just a bad way to go, all the way back to TOS. The Constitution's then seem to have been made over a weirdly long period of time...
Enterprise is 1701, Defiant is 1764, Constellation is 1017, Intrepid is 1631... when we factor in later additions like Cayuga at 1557 and New Jersey at 1975... and then adding in other information we know, like Discovery being 1031, despite being at least a decade newer than Enterprise...
Sure Stargazer is 2893, Hathaway is 2593... just by straight progression, Stargazer appears newer than Hathaway, although we already know that isn't always the case.
Hear me out here though, it might be helpful to look at the Excelsior-Class, which should also be a contemporary of the Constellation... we're look at, kind of a random sample, Excelsior 2000, Repulse 2544... and then basically every other one we see has a more TNG-style longer registry, Berlin 14232, Charleston 42285, Atlantis 72507, etc.
I'd like to focus on Atlantis here, NCC-72507... Voyager is 74656... were Exclesior's still being produced into the 2360's/70's? I mean, they could be... it's not really a problem, and if we are going to say the serial numbers are indicative of build time, then... yes, yes they were.
Realistically, you have things like the TOS Configuration New Jersey that shouldn't be far off from the Hathaway... I suppose that's not necessarily outlandish, if Hathaway was launched in 2285 and perhaps considering New Jersey may have been among, if the not the last, Constitution to be produced in the TOS Configuration, it would potentially have launched the 2260's...
Thinking of when Starfleet switch from 4 to 5 digits, it's hard to tell. The latest one I can find is NCC-9844, USS Antares, Miranda-Class still in operation in 2374. There was a Constellation-Class NCC-9754 in 2362.
Given that there is a Constellation-Class with an... almost 5 digit registry, it might imply that they were very much still being produced in the early-mid 24th century. It's certainly an aberration for Stargazer to have launched so relatively late with a registry so close to Hathaway.
I think I add to bit here that this all isn't necessarily to prove a point one way or another, just putting the information out there to ponder.
I have to disagree. The hull panelling, pop up phase cannons and ball turrets. It’s like some weird hybrid of mid 22nd and late 23rd century aesthetics. Theres nothing about it that looks post-TNG. Where’s the smooth curves?
I was actually directly responding to the interior look.
Exterior-wise, I actually think the Walker looks great and fits with ALL of the lore, TOS included given that it's supposed to be an old ship even by 2249. I think that ship easily fits in to like, the 2200-2210 range. Registry numbers, as usual, are suspect. It would make Shenzhou a newer ship at 1227 than the Constitution-Class USS Constellation and USS Discovery 1031, which is absolutely canonically 100% is not.