A very elegant Merckx.
Chrome plating - definitely custom order.
The paint looks original.
Stickers correct (original or well-matched) - only "Columbus" on the seat tube is missing.
Interesting fact: unusual brake bridge pads in the shape of diamonds.
If you feel like it, dismantle the fork and check the inscriptions on the piece of paper attached to the fork steering tube - you may find the customer's name (and other curiosities) there.