Artist: R. Buckminster Fuller

estimate: $50,000–70,000

estimate: $1,000–1,500

estimate: $1,000–1,500

estimate: $3,000–5,000

estimate: $3,000–5,000

estimate: $4,000–5,000

estimate: $4,000–5,000

estimate: $1,000–1,500

estimate: $3,000–5,000

estimate: $15,000–20,000

estimate: $3,000–5,000

estimate: $20,000–30,000

estimate: $3,000–5,000

estimate: $2,500–3,500

estimate: $1,000–1,500

estimate: $3,000–5,000

estimate: $15,000–20,000

estimate: $30,000–40,000

estimate: $2,000–3,000

estimate: $4,000–6,000

estimate: $4,000–6,000

estimate: $3,000–5,000

estimate: $2,000–3,000

estimate: $1,500–2,000

estimate: $5,000–7,000

estimate: $1,500–2,000

estimate: $700–900

estimate: $2,000–2,500

estimate: $2,000–2,500

estimate: $2,000–2,500

estimate: $100–200