1. Grips are from 30's, gun is 27, 28, MAYBE 29 at latest. Serial number would help.
grips are short- see bottom of frame.
2. Yep.
3. Buffed logo. "soft edges" here and there. still possibly a factory job, but bad pics make it hard to tell. check under grips when you get it. the logo clinched it and I quit looking hard.
The gun is a "38 M&P" to factory. "1905-4th Change" to collectors.
Any S&W with a swing out cyl is a "hand ejector". A few guns have the term in the model name- "32 Hand Ejector".