ten o'clock
`` Why do n't you see a doctor ? '' Abe shook his head and was about to reply when the telephone bell rang . `` That 's Sol Klinger , '' Morris exclaimed . `` He said he would let me know at ten o'clock what this Interstate Copper opened at . '' He darted for the telephone in the rear of the store , and when he returned his face was wreathed in smiles . `` It has come up to five already , '' he cried . `` We make it twenty-five hundred dollars . ''