Ah! Ha!
Thank you very much.
It works. Well, that saved a camera & a lens from some damaging mechanical interference.
.
The three lenses I have (+ a 2x tele) are shown with a P30 Camera. I have had these from yesterday when my wife was having a bit of a scavenge (which is how she got me
)during our six monthly council cleanup where you throw your rubbish on the footpath & the council pick it up. (Unless my wife gets there first)
The lenses were in their original leather cases except for the Tokina RMC 80-200 which was attached to the camera. The lenes are an M 28 - 2.8 & M 50 - 1.4. I have a couple of M42's (50 1.4 & 135 3.5) and I thought that they would operate the same way.
They are all a bit grubby but I couldn't see any evidence of fungus but I'll have a closer look before I store them with the others.
Interestingly, there were instruction manuals for a Canon Rebel & other Canon peripherals. Someone must have got there first & decided that the Pentax deserved to stay.
Lucky me.