The cashier's checks show on the front that they are drawn on banks within the U.S. although the letterhead at the top of the check shows an overseas investment bank.
I have been receiving cashier's checks from WSEX for many years and never had a problem either with timely receipt of the check via Fedex, so I can track it, nor any problem depositing them into my personal bank accounts. This is one book you can be confident in receiving funds. They even once did an overnight delivery on Saturday for me as well.
