The answer to your question is unfortunately very little or nothing. You may be lucky to even give them away
The value of a set of encyclopedias from 1971 can vary depending on the condition, edition, subject matter, and demand. Generally, older encyclopedias have decreased in value due to the availability of information online. You may want to check online marketplaces or consult with a rare book dealer for a more accurate estimate.
A 1971 basketball set would most likely be worth $185 american. By: Amitoj Rehill Calgary,Alberta, Canada
A Proof set is $8.00 & a Mint set is $5.00
As of 11/2008 a set of uncirculated 1971 U.S. coins retails for about $9.
Current average retail value is $5.00. Issue price was $3.50.
Current retail value is $8.00. Issue price was $5.00.
Average retail value is $7.00 Issue price was $5.00
According to USA Coin Book, Philadelphia, Denver and San Francisco Mint each came out with their own Mint Sets. As of 2010, each set is worth about $5.50.
encylopedia
The Pet Set - 1971 1971-06-21 was released on: USA: 21 June 1971
you don't
1971 Kenya Shillings are worth 14.01 United Kingdom Pounds
$30 new was how much it was worth new when first published in 1993. Its not particularily valuable like say The Concordance. (that fetches hundreds if not thousand)