Art market which is also called art and antique trades market mostly available in auctions.
Christie's and Sotheby's are the well-known auction houses.
Many fine and applied art galleries sell art too.
Estimated market value is 60 Bln USD
It is not a small market. partly digitalized as online sales.
An art gallery in London Cork Street already accepting BTC, ETH, LTC, DASH, and Monero.
Some collectors prefer privacy and do not want to declare their identity to the public.
Bitcoin and other coins can be a good opportunity for this market.
Using cryptocurrency can provide privacy and can provide better transaction costs. Imagine that If a gallery or a collector buys a Rembrandt, how much will be a transaction fee of a few million USD?
Some items are too expensive to buy, even for some galleries who have financing difficulties.
Shares of a well known some paintings can be sold via cryptocurrency. Who wants to buy %1 ownership of Mona Lisa?
It is a win-win solution, museums can sell some percentage ( such as %40 Mona Lisa ) of antiques and arts to cover maintenance costs in cryptocurrency without losing museum assets and people can ben owners of small shares of antiques and arts.
This can provide easy to create a secondary market of fine art paintings without disturbing by country basis local jurisdictions.
just giving ideas to marketing teams of cryptocurrency projects.