You can find stuff like this new, but it’s going to be expensive and at specialty retailers. Some that I know of in America are O’Connell’s, Ben Silver, and JPress. Even more options if you look at the UK/EU. 

Same thing is going on with houses honestly. The beautiful craftsmanship and millwork of victorian homes would cost millions to recreate today, so is great we can find old houses or used clothing that still is quality.