These were purchased at an estate sale by my husband and me, so the age and origination of the set is unknown, but they are definitely old.
We didn't pay very much for them as I believe the estate sale company thought they were plastic (they were advertised as "magnetic chess pieces" - there are no magnets and they are certainly not plastic). They appear to be elephant ivory (we did the "hot needle test and there was no effect, there are definite Schreger lines).
The king measures 3" tall. They are all in good vintage condition and the set is complete, except one black pawn has two chips. The felt in the box appears to have been put in by hand, and honestly is quite useless at holding the pieces in when closed. But it will be included, if desired. We would love to sell this beautiful set to someone who would appreciate them.
Please email me at firstname.lastname@example.org with any offers, questions, information, or for more photos. Thanks so much!