I was walking past the Rubin Museum of Art in NYC’s Chelsea neighborhood, and spotted these beautiful notebooks in the window. I didn’t have a chance to go into the shop to find out more, but I assume they are selling them, not just exhibiting them. The museum is dedicated to art of the Himalayas, so they must be from Tibet or somewhere in that vicinity.
These remind me of some old Denbigh ledgers I saw at a distillery last year.  The makers of the excellent Alwych notebook still manufacture a modern descendent of them, though the edges aren’t as marbled as the older ones.Â