@unlambda they both say something, but the lower one is in a deliberately over-ornate, impossible-to-read style, I can only make out "book" (probably as part of "library" but I'm not sure). the more vertical, legible one says Harvard 哈佛。

It's typical for these types of manuscripts to have more than one ownership seal; you just add a new one every time it changes hands. Some art pieces have dozens.

@unlambda Been looking at this on and off all day

四朙 was obviously the region and then 經樓藏書印 is a common phrase, but the rest was some obscure 篆書 bullshit

Finally arrived at 四朙盧氏抱經樓藏書印 which I'm 95% sure is correct 🤞​🤞🤞