The forend oversize wood and rectangular roller latching system appears to be of the later and last version that was manufactured (1940's style) and most likely a replacement. Banjo style roller latch plate would have been original for that time frame. Serial number 6428 shows 1911 in the book.
Pistol grip cap is 1940's style and a replacement for sure.
Case colors appear to be a re-case/refinish to me, trigger guard refinish as well.
Wood appears to have been refinished at some time.
The barrels have been discussed in prior posts by many. They are replacement barrels IMO.
Cracks behind the lock plates are common on many LC's, owner induced by frequent use of the wrong ammunition usually does it.
Just my opinion.
