Mason Maressa, a 16-year-old student in Michigan, invested $3,500 he had saved into purchasing a vintage Rolex Air-King watch, which he later sold for about $4,000. This initial transaction sparked his interest in the pre-owned luxury watch market. By age 21, Maressa's business, Clocked In, opened its first physical store in Grand Haven, Michigan, specializing in brands like Rolex and Omega. The company now operates by appointment only and has grown to cater to both novice buyers and seasoned collectors, emphasizing trust and education in the luxury watch market.
Written locally by qwen2.5:14b on 2026-09-17,
using this article's own text rather than the other coverage of the
same event (that is the story summary below).
Story summary
At 16, Michigan student Mason Maressa spent $3,500 on a vintage Rolex Air-King, an investment that eventually led to his current success. After selling the Rolex for about $4,000, he reinvested his profits into more watches and continued buying and selling them online. Over time, this hobby grew into a business focused on pre-owned luxury watch trading, which now operates under the name Clocked In. By the age of 21, Maressa’s company had surpassed $10 million in revenue. The business not only buys and sells watches but also trades them with other industry participants, allowing customers to engage without needing extensive knowledge about watches. This venture highlights the potential for turning a personal interest into a lucrative enterprise through persistent effort and market understanding.
Written for “Teen Entrepreneur Success Story” on 2026-09-17,
grounded in this article and the 0 other(s) covering the same event.
At 16, Michigan student Mason Maressa had saved $3,500 from working while attending high school.
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Maressa → save → school
He could have used the money to buy a car.
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He → use → car
Instead, he spent it on a vintage Rolex Air-King, a decision that later became the starting point of his watch business.
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that → spend → business
According to Entrepreneur magazine, Maressa was already interested in luxury goods, especially watches.
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Maressa → accord → goods
A few days after the watch arrived, he listed it for sale online.
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he → arrive → sale
He eventually sold it for about $4,000, making roughly $500 in profit.
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He → sell → profit
The amount was not enough to change his life, but the sale showed Maressa that there could be an opportunity in a market he already understood and enjoyed.
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he → change → market
Rather than spending the money he made, he put it into another watch and continued buying and selling.
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he → spend → watch
That process gradually became a business.
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process → become → ?
As Maressa bought more watches, he also learned about the pre-owned luxury watch market.
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he → buy → market
Pricing, condition, references, market demand, authentication and customer relationships became part of his work.
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Pricing → become → work
For the next several years, he continued trading watches while expanding his inventory.
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he → continue → inventory
What began with one Rolex gradually became a larger operation, and by his late teens, the watch business had become a serious venture.
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business → begin → teens
From online sales to a physical store
The next major step came when Maressa decided to take the business beyond online transactions.
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Maressa → come → transactions
In January 2025, Clocked In opened a brick-and-mortar store at 601 S Beacon Blvd, Suite 103, in Grand Haven, Michigan.
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In → open → Haven
The store operates by appointment only.
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store → operate → appointment
It specialises in pre-owned luxury watches, with brands including Rolex, Omega, Tudor and other recognised names in the industry.
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brands → specialise → industry
The store caters to experienced collectors who may already know the reference they want, as well as people buying a luxury watch for the first time.
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they → cater → time
The store also gives customers the chance to sit down, handle different watches and compare them before making a purchase.
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store → give → purchase
This is particularly relevant for a market where individual watches can cost thousands of dollars.
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watches → cost → dollars
Building trust in the market
Pre-owned luxury watches can differ from one another even when they are the same model and year.
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they → build → one
Their condition, completeness and value can vary, making the reputation of the seller important to buyers.
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reputation → vary → buyers
Clocked In says building customer trust became an important part of its growth.
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building → say → growth
Maressa wanted the buying process to be approachable for both experienced collectors and people purchasing their first Rolex.
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process → want → Rolex
Customers can ask questions, compare different watches and understand the differences between pieces without already being experts in the field.
The company buys, sells and trades pre-owned timepieces with customers and other participants in the watch industry.
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company → ask → industry
Its current business model also includes unworn pieces, according to the company's website.
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model → include → website
Clocked In says its customer base includes collectors and enthusiasts from West Michigan and beyond.
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base → say → Michigan
The company describes itself as a luxury watch dealer focused on authentication, quality and customer service.
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company → describe → authentication
Five years after buying his first Rolex at 16, Maressa says Clocked In has crossed $10 million in cumulative sales.
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In → buy → sales
The Aporia
