ZURICH, Nov 29 (Reuters) - Julius Baer's Chief Executive declined to confirm on Wednesday whether the private bank's 606 million Swiss franc ($693 million) exposure is to toppled property giant Signa.

"I cannot comment on clients," Philipp Rickenbacher said at the Financial Times' Global Banking Summit.

The CEO said it was too early to say what specific lessons could be learned relating to the large exposure in its private debt business.

"Right now the focus is on maximising the value of our collateral." ($1 = 0.8749 Swiss francs) (Reporting by Noele Illien;Editing by Elaine Hardcastle)