The story
The name is the house number
131/1 To Hien Thanh — a pho shop that exists online as the owner’s own product list: four bowls, one price, no theater.

shop photo
The shop's own beef-ball bowl
The product shot the shop itself posted — clear broth, sliced beef, chili, onion, chopsticks on wood. The only photo verified as the shop's.
131/1
The address is the signboard
No fancy brand, no slogan — 131/1 To Hien Thanh, now in Hoa Hung Ward (formerly Ward 13), District 10. Find the number, find the shop.
10+ years
What regulars say
Foody diners call the broth rich — "a bit pricey but worth it" — with regulars of 10+ years. Individual reviews, not an aggregate score.
“Phở 131/1 - Tô Hiến Thành hân hạnh cung cấp sản phẩm này.”The shop's sales page