Deliveries extended overnight gains on the forward cottonseeds oilcake market on Tuesday in the process of trading, dealers said. The December vaida closed at Rs 1308.00 and opened with 30 paisa gain at Rs 1308.30 in the early session, dealers said. The January vaida closed at Rs 1451.30 and it also opened with a gain of 70 paisa at Rs 1452.00 in the morning session, they added.