Auction - Registration number of vehicle - Special number purchased - Put to re-auction - Present one is a case wherein the doctrine of reasonable expectation is clearly attracted - After the highest bid was accepted and he was asked to deposit the remaining amount, petitioner proceeded on reasonable expectation withdrawing the amount deposited by him for the remaining special numbers - Petitioner was fully justified to expect from the respondent-authorities that now they will allow him to deposit the remaining  amount - Special number which was purchased by him being the highest bidder - Under such circumstances action of the respondents in cancelling the same cannot be sustained. (173) P.L.R.