Exhibit 99.23 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-M KEY PERFORMANCE FACTORS OCTOBER, 1997 Expected B Maturity 12/15/06 Blended Coupon 5.9303% Excess Protection Level 3 Month Average 4.86% October, 1997 5.32% September, 1997 4.72% August, 1997 4.52% Cash Yield 18.42% Investor Charge Offs 4.61% Base Rate 8.49% Over 35 Day Delinquency 4.76% Seller's Interest 13.78% Total Payment Rate 14.00% Total Principal Balance $ 31,941,631,051.83 Investor Participation Amount $ 500,000,000.00 Seller Participation Amount $ 4,401,496,533.34