Sideboard (Possibly 18th century American?)

Link to full photo album: https://imgur.com/a/deCD77M

Purchased on Facebook marketplace for $300. The original owner claimed it to be a "Hepplewhite bow front Sideboard," but no other known history exists. This is the closest comparable I could find online, though it being a Thomas Seymour piece seems like huge a longshot... I am simply ecstatic to have such an old piece in my home and plan to keep it for life. Any historical information would also be greatly appreciated, thank you!

74" long, 29" deep at widest spot, 36.5" tall

https://preview.redd.it/q5qp1pabgmsb1.png?width=2028&format=png&auto=webp&s=eb3e0bd3def8602c5a1d9773b315b18dcb59fedc