Very nice 4" Model 29-3

IIRC the 6.5" was eliminated by the dash 3 revision so more likely the other one is a 6".
Both of these are 29-3's,

Sold off the snub a few years back thinking it was too small for the range, too big to carry and non P&R 29's wouldn't become collectible ... OK I was wrong....LOL

The 4"ers are my favorite barrel length.