In Nha Trang, do old and new US dollar bills get different exchange rates, and can Vietcombank or BIDV give new USD notes when exchanging VND to dollars?

At some jewelry-shop exchange points, new dollar bills get one rate and older ones a slightly lower rate. One example: new notes were exchanged at 2610, while older notes went for 2570-2580.

In Nha Trang, the best rate is usually for clean newer US$100 bills. Older designs, folded, stamped, or worn notes are often accepted at a weaker rate, and the difference becomes more noticeable on larger exchanges.

When exchanging VND into USD at Vietcombank or BIDV, the result depends not only on the rate but also on what cash the teller has in stock. Even if the transaction is available, the branch may give you a mixed bundle of newer and older notes.

If you specifically want newer USD notes, it is best to ask before the exchange is processed. Without that request, banks usually hand out whatever bills are available that day.

There is usually a rate difference between newer and older US dollars when selling them for VND, but for clean older notes the gap is often modest. The biggest discount is usually on small denominations and bills in poor condition.

For practical travel use, it is usually better to carry or buy large newer-design bills, especially modern US$100 notes. They are easier to exchange again in Vietnam without losing much on the rate.