In the last month, we represented two separate purchasers in connection with transactions involving high end residential co-op units.   In one transaction, we represented the purchaser of a $3.9 million co-op unit as well as the private bank which issued a $2 million loan secured by the unit.   In another, we represented a sophisticated investor who acquired a $4 million co-op unit.   In that transaction, the purchaser was obligated to renovate the electrical systems pertaining to the unit and, on short notice, we were able to successfully negotiate a fair and reasonable agreement which all sides were comfortable with. These matters were handled by Michael J. Romer.