Yeah yeah I know!
We young 'whipper snappers' in our 60's should know better. Certainly in the latter days of flying the thing, the gauge was in inches of mercury. I was told if you want to refer to boost, double the boost required and add 32 and that would give you inches of M. (Roughly)
Nice to see there are still some of the grumpy old s*ds around to keep us on our toes! Was your airspeed indicator in MPH!
1066 had a couple of mark ones in 1972, (TGs 536 / 568) so it may have been one of them that went to Germany that Saturday morning.