Real World Application Question

I understand how to create an asset in a very basic capacity. But how do I take a group of assets, or sub-class of assets, and tie them to a real world physical product?

Let’s say I create a run of 500 wagons branded as J-Wags. Each wagon has a unique sub-asset identifier noting the which wagon it was made in this run. So I brand the first sub-asset as 001, for first wagon, and add the Julian date for day production complete. The sub-asset name is ‘J-Wags-001-067’.

How am I adding that designation to the physical product and transfer the sub-asset of the coin to owner tying the owner to the physical product?