I don't believe that the SAR involves the sale or payment of a product or instrument, so item 52 (paying or selling location) should be left blank.
For item 39, also a blank. There was no product involved
For item 40, check funds transfer, and also check box "z" and insert ACH in the "list below"
John S. Burnett
Fighting for Compliance since 1976
Bankers' Threads User #8