Super visas for applicants from non-exempt countries is a visa counterfoil pasted in the passport. It is not a letter.May be not completely related to this discussion but you guys would know, parents/grand parents get the super visa as a letter or visa stamp ? when my parents already have a TRV for next 10 years and i am applying for super visa above that.
You may want to search for a thread started by member se7en whose mom had a similar TRV/super visa situation like you do