I was working at Bethlehem steel shipyard at 20th st. off 3rd st. in San Francisco at lunch time.
It was a clear cloudless day.
I happened to lean back & look straight up and saw the object from directly above.
It was silver, metallic, maybe a little thinner than a football and the ends were sharp points.
Its lines were not fuzzy but well defined & sharp.
The object was so high that I felt if I took my eyes off it for a second I might not be able to find it again.
3 other people with me did not see it and I could understand why.
The object was moving West to East, with no sound.
It became too small to see at about 45° to 35° to the horizon.
This object was real I do so swear.