^^^ Mike: those are my thoughts exactly.
A no-prefix or V-prefix snubbie could be a legitimately rare and valuable gun IF it hasn't been refinished and/or poorly modified... and that's a big IF.
A C-prefix gun could still be an uncommon and interesting variant if it has a mix of earlier and later features, which is frequent in the low-to-mid C-series range, but value is not likely to be particularly high.
A D-prefix gun is nothing special, although they will usually sell for a slight premium over equal 4"-5"-6" guns in areas where CCW is popular.
"Smokey, this is not 'Nam. This is bowling. There are rules... MARK IT ZERO!!" - Walter Sobchak