100 Blank White Cassettes (New Old Stock) 60minutes. Discover a set of 100 brand-new, never-used blank white cassettes, perfect for recording your favorite music, audio projects, or archiving memories. These cassettes are new old stock. Capture your audio in retro style with these high-quality, vintage blank cassettes, perfect for your recording needs. I did not try to record anything in them. Look carefully at the photos before bidding. I will ship safely and immediately after payment.