Stilton is right.
"Think you are mistaken there Aviate
Lufthansa never operated the 747SP"
The previous flight was in a 747SP from Heathrow and so I changed [I was based in Munich] to a Lufthansa flight [Frankfurt] the next week to avoid the nasty sinus problem [which was still ongoing]. How my brain mixed it up I can only put down to old age! I see I made over 150 long distance [SLF] flights in just over 2 years, no wonder my recollection is below par!