Valuing a card with no recent sales

You have identified the card, filtered to sold listings, and there is nothing there. This happens constantly with numbered parallels, lower profile players and anything outside the biggest sets, and it does not mean the card is worthless.

First, check it is not an identification problem

An empty result is more often a wrong search than a rare card. Try the card number alone, try the set without the year, try the player name with the parallel colour. Sellers title listings inconsistently, and a search that matches your ideal title matches nothing.

Then widen one variable at a time

1. Drop the parallel and price the base card. That is your floor, not your answer.
2. Look at the same parallel of a comparable player in the same set. That gives you the shape of the premium.
3. Look at the same card from the adjacent year, if the set runs annually.

Each widening step makes the estimate weaker. Two steps out you are no longer valuing a card, you are constructing an argument about one. That is fine as long as you know which you are doing.

When the answer is genuinely that there is no price

Some cards do not have a market. A one of one has no comps by definition. A card with two sales in three years has a price the day someone wants it and not otherwise. The method in how to price a sports card is explicit that thin evidence should be reported as thin, rather than dressed up as a figure.

Practically, that means listing it and letting the market answer, or holding it. What it does not mean is picking the number you would like and treating it as established.