North Sea Crude- Forties, WTI Midland dip

LONDON, June 26 (Reuters) - U.S. WTI Midland and North Sea crude differentials dipped on Wednesday, as fresh selling interest was tabled in the afternoon window. PLATTS WINDOW * Indications are on a free-on-board (FOB) basis unless marked as cost, insurance and freight (CIF) or delivered at place (DAP). * WTI Midland: Vitol sold Trafigura a July 17-21 cargo at dated plus $2.50 CIF Rotterdam. * The deal equated to around dated plus $1.32 on a FOB basis, according to Reuters calculations. * On Tuesday, Trafigura bought a July 18-22 cargo from Glencore at dated Brent plus $2.55 CIF Rotterdam. * WTI Midland: Trafigura bid for a July 8-14 cargo at dated plus $2.80 CIF Rotterdam. * WTI Midland: Repsol bid for a July 15-19 cargo at dated plus $2.35 CIF Rotterdam. * WTI Midland: Glencore offered a July 23-27 cargo at dated plus $2.25 CIF Rotterdam. * WTI Midland: Aramco offered a July 25-29 cargo at dated plus $2.25 CIF Rotterdam. * Forties: Total offered a July 8-12 cargo loading on vessel Grimstad at dated plus $2.45 CIF Rotterdam. * Total's offer equated to around dated plus $1.15 on a FOB basis, according to Reuters calculations. * In the previous session, Trafigura had bid for a July 5-22 cargo at dated plus $1.60 FOB. * Total's offer made Forties the cheapest grade underpinning the dated Brent benchmark on Wednesday. (Reporting by Robert Harvey; Editing by Krishna Chandra Eluri and Emelia Sithole-Matarise)