Entry point: King of the Rocket Men (1949).
Explore the career in pictures
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Photo: Monogram Pictures. Tristram Coffin as Scott Pearson in Dangerous Money (1946). Commons screenshot converted to WebP and adapted for the share image. Public domain in the United States; Commons PD-US-no notice record. Portrait resized and converted; share image cropped with text added. See the source and license details below. Image credits
Tris Coffin, also credited as Tristram Coffin, was an American film and television actor born in Mammoth, Utah, on August 13, 1909. He died in Santa Monica on March 26, 1990. His career connects theatrical adventure serials with the Westerns and guest appearances of early television. This is the actor associated with Jeff King and Captain Tom Rynning, not the seventeenth-century settler or the folklorist whose similar names can complicate a search.
Coffin's credits include Mysterious Dr. Satan, Sky Raiders, Perils of Nyoka and Jesse James Rides Again. Those chapter adventures sit alongside feature-film work and later television appearances. The portrait here shows a specific role: Scott Pearson in Dangerous Money, a 1946 Charlie Chan mystery. AFI identifies Pearson as the undercover agent whose investigation aboard a ship helps set the story in motion. It is a character image rather than an undated studio headshot.
King of the Rocket Men offers a direct introduction to Coffin as a leading adventurer. In Republic's twelve-chapter 1949 serial, he plays scientist Jeff King, who uses a rocket apparatus and helmet while opposing the mysterious Dr. Vulcan. Fred C. Brannon directed, with Mae Clarke playing reporter Glenda Thomas. Watch the difference between King's explanatory scenes and the action passages: the serial has to make an invention understandable while keeping a chapter's danger moving toward its next cliffhanger.
Compare that flying scientist with Captain Tom Rynning in 26 Men. The television Western places Coffin within a continuing law-enforcement partnership rather than a masked villain's technological scheme. The costume, setting and story rhythm change, but both roles give the viewer an identifiable figure to follow through recurring danger. This comparison is a viewing suggestion, not an assertion that Coffin performed every stunt visible on screen; an action character is created through acting, staging, editing and specialist work.
26 Men pairs Coffin with Kelo Henderson, who plays Ranger Clint Travis. Produced for syndication, the series concerns the Arizona Rangers and ran from 1957 to 1959. Its historical premise should not be confused with a documentary account of each episode's events. In a rewatch, compare how the captain and younger ranger exchange information and divide an investigation. The partnership gives a different picture of Coffin's work from a single guest appearance or a supporting part in a feature.
Television appearances include Adventures of Superman and I Love Lucy, placing Coffin in both adventure and situation comedy. In the separate 1954 short Stamp Day for Superman, he plays Principal Garwood in a production promoting United States savings bonds. The gallery's series artwork identifies these wider television settings; it does not claim to show his character or a particular episode. That distinction matters for a performer whose individual appearances can be much briefer than the programmes' long runs.
Republic's rocket-powered imagery had a life beyond Coffin's serial. AFI records that The Rocketeer's 1991 end credits thanked Republic and its Rocketman and Commando Cody characters. That is evidence of an acknowledged creative lineage, not a Coffin acting credit in the later film. For a compact career journey, start with Jeff King, continue with Rynning in 26 Men, then compare the much smaller Dangerous Money role. Together they show how the same performer could lead an adventure, sustain a series and help establish a mystery.
Selected career milestones. Years identify the production or labeled milestone; recurring actors may join a series later. Artwork represents the production and may show other cast members. Select an image for a larger view.
Captain Tom Rynning. Arizona Rangers series with Kelo Henderson.
Production artwork from the DailyTimeCapsule archive. Image credits
Guest roles. Series artwork; distinct from the 1954 savings-bond short.
Production artwork from the DailyTimeCapsule archive. Image credits
Guest appearance. Comedy work alongside his adventure and Western credits.
Production artwork from the DailyTimeCapsule archive. Image credits
Portrait: Monogram Pictures
https://commons.wikimedia.org/wiki/File:Tris_Coffin_in_Dangerous_Money_(1946).jpg
License: Public domain in the United States; Commons PD-US-no notice record https://commons.wikimedia.org/wiki/Template:PD-US-no_notice
Reviewed September 22, 2026. Source references and image credits are listed below. This is a selected profile, not a complete credit list.
Production artwork is reused from the DailyTimeCapsule archive. The imagery represents the production and may not depict this actor or their particular season. Portrait and share-photo attribution appears beneath the portrait.
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