Marcus purchased a diamond ring for $15,000 10 years ago. It was stolen in March this year. The ring was purchased to celebrate achieving a significant promotion at work. The FMV at the time of the theft was $20,000. The ring was insured, and after the deductible, Marcus received $19,000 from the insurance company. Marcus replaced the ring with a new one for $20,000. Under Section 1033.

What is Marcus's new basis in the replacement ring?