Impossible to answer without the serial number. The serial number should be on the butt.
You did not provide the serial number. You will have to call S&W to find out.
Impossible to answer witout a DETAILED description of ALL markings, features and condition.
50-100
It is any number of the form (38s*k)/k where k is a non-zero integer.
actually you can use 38 special or 38S&W (shorter case), but you cannot use 38 special in a 38S&W pistol. in your case 38 special
The coordinates 38S 145E correspond to Melbourne, Australia.
2,19
RG firearms were typically low cost/low quality items. Depending on model and condition, these may sell for $25-$75.
Unforunately, just the serial number does not give us much info. Serial numbers are NOT unique- more than one gun bears 3635- and H&R made thousands of top break 38s- in dozens of different models. Link below can give you some info- read all the way to the bottom for some of the model info.
3/8 = 0.375
@ 50 USD or so