Where the quotation of shares is suspended at the date of death but is subsequently restored the shares are treated as ‘qualifying investments’ if they are sold within 12 months of the death, IHTA84/S178 (2).
For the date of death value you should use the value as advised by FACET. The sale value is calculated in the normal way.
Special treatment also applies to shares that are qualifying investments at the date of death but which are subsequently suspended ( IHTM34106) or cancelled (IHTM34107).
If the shares were suspended at death and the suspension remains in force through the following 12 months no relief is due. This is because the investment is not quoted at any relevant time.