We have a full set of (10) Colliers New Encyclopedias from 1921 in very good condition. What are they worth and where should we try to sell them?
The Colliers New Encyclopedia, 1921 set is the complete revised set dating from 1902-1921 editions and reduced from 16 volumes to 10 volumes.
Your set appears to be in good condition but you're still competing with large numbers of sellers all over the Internet.
There are listings of sets being sold with sold prices ranging from $25 to $155 so it would appear that you could start your price at the higher price with offers considered and leave the set listed for several weeks.
If you do not receive any offers, you should consider lowering the price and wait again.
There does not appear to be any specific site for this type of book, other than Abe's Books, so list your set on as many sites as you wish. Facebook Marketplace is good but so are several others.
Judging by the photo you have Colliers New Encyclopedia Anniversary Edition. This is what Colliers New Encyclopedias from 1921 looks like
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Colliers' New Encyclopedia was first published by P. F. Collier & Son in 1902 in 16 volumes and then reprinted often until 1921. Further editions were published in 1926, 1928 and 1929 (Colliers New Encyclopedia was published from 1902 to 1929).
Complete Colliers New Encyclopedia Anniversary Edition has 11 volumes (10 + 1 Revision).
I found Colliers New Encyclopedia Anniversary Edition 11 volumes at $250
www.etsy.com/
Collier's New Encyclopedia Anniversary Edition 10 Volumes, includes 96 maps, hardcover at $108.95
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This set sold for $55 on August 24th:
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These are considered antique because they are over 100 years old. I would see a book dealer and get a free verbal appraisal.
4 volumes of Colliers New Encyclopedia (the cover of which looks identical) are listed for $20.99
This Collier's New Encyclopedia 10 Volumes Hardcover from 1921 for sale on amazon $60
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I found Colliers New Encyclopedia vol. 1-10 from from 2021
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The set features leather covers, the page edges are marbled.
You can get a free trial account to see what this set sold for.
This one is listed at $150
www.etsy.com/
1-10 volumes