Ho Oilstain,
Unbelievable co-incidences DO happen. I was once driving an RAF Standard Vanguard, with a screen wiper that would not switch off. I asked everybody in the car to concentrate (eg pull a stern face) on stopping the wiper. They did. The wiper stopped immediately. Very worrying.
As for your spring ... Either it's a spring that you dropped recently, or a passing itinerant scrap metal dealer dropped it on the way out of your garage.
If I may ... one of my mates was an RAF Apprentice at RAF Halton. One day, on old Biddy demanded to see the CO. She presented him with a lump of metal, which she claimed had fallen of one of his aeroplanes, and broken one of her windows, and what was he going to do about it?
He gave her a couple of quid (£2) and sent the item down to the technical bods.
Nobody could identify the part, so it was sent elsewhere, for identification. Months passed before it was identified, and the CO got a reply.
It was part of the steering mechanism off a Zeppelin. Don't mess with British grandmothers.
602