Robert,
It was built in '97, the only way to know for sure is to call or email H&R with the sn to determine what frame it is. There are some maybe indicators, but nothing reliable to tell for sure which is. If the barrel on it has the last 3 digits of the frame serial number engraved in the left side of the underlug, chances are good that its the original barrel/frame combo.
Tim
hr1871@hr1871.com
(978) 630-8220