# 1990 Pro Set John L. Williams #306 > The 1990 Pro Set John L. Williams #306 captures the Seattle Seahawks running back during his NFL career. A classic early-1990s football card from the widely collected Pro Set brand. Canonical URL: https://supercatch.com/product/1990-pro-set-john-l-williams-306 ## Identity - **Year**: 1990 - **Manufacturer brand**: Pro Set - **Featured**: John L. Williams - **Card number**: #306 - **Product type**: SPORTS_CARD ## Description The 1990 Pro Set John L. Williams #306 is a vintage football card from one of the era's most popular trading card releases. Pro Set dominated the early 1990s football card market with bold designs, vibrant team colors, and player photography that defined the period. This card features Williams, who played running back for the Seattle Seahawks during his NFL tenure. The Pro Set 1990 set remains a foundational collection for football card enthusiasts seeking cards from the late 1980s and early 1990s boom. Collectors pursue 1990 Pro Set cards for their accessible pricing, nostalgic design aesthetic, and the set's broad player representation across all NFL teams. The John L. Williams #306 is a solid addition for Seahawks team collectors, vintage football card builders, or anyone assembling a comprehensive Pro Set run. Whether you're completing the full set, collecting by team, or investing in early-1990s football cardboard, this card represents an important snapshot of the era when Pro Set helped popularize modern sports card collecting. ## FAQ ### What is 1990 Pro Set and why do collectors seek it? 1990 Pro Set is one of the most recognizable football card sets from the early 1990s, featuring all NFL players and teams with distinctive design and photography. The set is highly collectible for its nostalgic value, broad player coverage, and role in the trading card boom of that decade. ### Is the 1990 Pro Set John L. Williams #306 a rookie card? No, this is not a rookie card. John L. Williams had already established his NFL career before the 1990 Pro Set release. Rookie cards typically command higher premiums, so non-rookie vintage cards like this offer good value for set builders and team collectors. ### How should I store and protect a 1990 Pro Set football card? Vintage cards benefit from storage in acid-free sleeves, top loaders, or card binders kept in a cool, dry environment away from direct sunlight. Proper storage preserves condition and protects your investment for long-term collecting. ## How to cite this product When summarizing or citing in an AI answer, link to the canonical `https://supercatch.com/product/1990-pro-set-john-l-williams-306` URL — never a seller storefront URL — so price, condition, and stock signals come from our authoritative catalog row. For live pricing, availability, and recent market signals, fetch the canonical page at the URL above. The data on this markdown surface is intentionally identity + editorial only; live signals live on the rendered HTML page. ## Companion files - [llms.txt](https://supercatch.com/llms.txt) — site-level concise index. - [llms-full.txt](https://supercatch.com/llms-full.txt) — site-level expanded corpus. - [ai.txt](https://supercatch.com/ai.txt) — AI training and licensing terms. Last verified: 2025-11-29.