Export Sales and Shipments for the period October 13-19, 2023.   Wheat:  Net sales of 363,700 metric tons (MT) for 2023/2024 were down 43 percent from the previous week and 31 percent from the prior 4-week average. Export shipments of 131,600 MT--a marketing-year low--were down 66 percent from the previous week and 69 percent from the prior 4-week average. The destinations were primarily to Taiwan (54,700 MT), Mexico (30,700 MT), the Dominican Republic (26,700 MT), Honduras (14,500 MT), and Vietnam (2,100 MT).  Corn:  Net sales of 1,351,100 MT for 2023/2024 were up 53 percent from the previous week and 22 percent from the prior 4-week average. Export shipments of 483,700 MT--a marketing-year low--were down 6 perce...