It seems this particular art is too important to you, well, bring it.
Just cover it with a plain white paper so as not to expose it to the public, just incase they will open your baggage. Lower rank custom guards(if ever seen will question it) but for higher rank officer will definitely allow it because he is more educated.

If ever, confiscated, speak to the Highest Rank Officer on duty. He is more flexible.

Think it will pass.

Good Luck.