This seat came with my 2016 Fat Boy S when I bought it in 2019. The only identifying marks on the seat is the generic "RDW-96/61-0067" on the tongue and "53 15 000" in yellow under the seat. I have done lots of Google searches and nothing is coming close. Any suggestions, ideas, or potential models in mind?

 

Looks like H-D 51801-07 Sundowner Deep Bucket Seat for Fat Boy Models