A few months after the first projection, Neville again found himself released from the body. Remembering that he had been unable to force his way through the wall, he this time quietly imagined himself elsewhere — and 'in the twinkling of an eye I was there'. He takes this as the moment he knew he was all Imagination: 'In my experience I felt myself to be spirit, yet I could not get through the wall. I moved only when I imagined myself elsewhere.'
Date (happened)
between 1927 and 1928
unresolved
between 1927 and 1928
bound · possible
Source
'A few months later' — relative to the first projection, which the same source dates to 1927
Why
Would become exact if the first projection is ever dated to a month.
Reasoning
The source gives no date of its own, only an interval from the first projection. A few months after an unspecified point in 1927 falls in 1927 or early 1928, so the claim is bounded across both years and marked possible. It is a derived bound, not a stated date, and it moves if the 1927 anchor moves.
Told / reported
between 1953 and 1954
stated · probable
Source
Broome's notes: the San Francisco talks of 1953 or the Science of Mind Church talks of 1954
Reasoning
The source names two possible occasions for the telling and does not choose between them.