DAY ONE: The Texas Ranch Auction
Sat, Sep 27, 2025 02:00PM EDT
Lot 151
Natural Bridge Caverns (San Antonio, Texas) Sign
Estimate: $1,000 - $2,000
Sold for
$4,000
Sold Price excludes BP
Bid Increments
| Price | Bid Increment |
|---|---|
| $0 | $10 |
| $100 | $25 |
| $500 | $50 |
| $1,000 | $100 |
| $2,500 | $250 |
| $5,000 | $500 |
| $10,000 | $1,000 |
| $25,000 | $2,500 |
| $50,000 | $5,000 |
| $100,000 | $10,000 |
Painted wooden sign for Natural Bridge Caverns (San Antonio, Texas), the largest commercial caverns in the state of Texas, depicting the cavern's mascot character Grendel the Dinosaur, painted by San Antonio artist Dan Martinez (American, 20th c.) and displayed on billboard advertisement circa 1970s
height 46 in. x width 70 in.
Provenance: Property from the personal collection of a New Braunfels, Texas gentleman who has collected vintage signage for several years, who purchased the sign directly from the artist's daughter from her home in Alamo Heights, Texas
Available payment options
Vogt Auction Galleries The Great Texas Auction House
Monday-Friday 10am-6pm
7233 Blanco Road
San Antonio, TX 78216
(210) 822-6155
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