Without the carving and crack it would be an ordinary $5 ivory. I do believe that there is no code for this $5, so it would be a new chip. Depending on rarity, $60 to $125.

With the carving and crack, $350 to $500 (IMO)

Without the crack, $850 to $1000.

Remember, I believe that the additional carving was done a long, long time ago. Maybe it was done in the 1800s, when the chip was new.

Compare the chip on ebay with my chip (both sides of my chip shown). Notice the similarities?