A.M. Best Affirms Credit Ratings of Polish Re A.M. Best has affirmed the Financial Strength Rating of A- (Excellent) and the Long-Term Issuer Credit Rating of “a-” of Polskie Towarzystwo Reasekuracji S.A. (Polish Re) (Poland). The outlook of these Credit Ratings (ratings) remains stable. FAIRFAX FINANCIAL HOLDINGS LIMITED is 100% owner of the company.