* Rarity: Certain cards, especially those in mint condition or with unique characteristics, are more valuable.
* Demand: Are people actively searching for these cards? If there's little demand, they might be worth less.
* Condition: A pristine card is worth more than one that's damaged or faded.
* Series: There might be different sets of Mork and Mindy trading cards, and some could be rarer than others.
To get a better idea of their value:
1. Research online: Look up information on specific card sets, individual cards, and their condition. Sites like eBay and ComicConnect can give you an idea of past selling prices.
2. Check with collectors: If you know any collectors of TV show memorabilia or trading cards, they might be able to give you a more informed opinion.
Remember:
* It's unlikely that Mork and Mindy trading cards will be worth a fortune unless they are extremely rare and in perfect condition.
* If you're looking to sell, be realistic about pricing.
* Enjoy the nostalgia! Even if the monetary value is low, they can still hold sentimental value.