Looked high and low on GB and WWW for answers or clues to the year of birth for
H&R Topper JR Model490 .410 with no luck.
The only information I come up with is that they were made 1962-1985 and it's
the Jr model of the 158. It's my understanding that they didn't get a serial# until 1964 starting with (AA)**123456
The "P" is a pressure test for 3" shells?
It does not have a serial# - It has an old dried up red recoil pad (circles and diamonds) H&R Arms logo on butt
Pat 2876576
It's a take down with no screw in the forearm
On the top ( GAUGE-P and also Mod 410-P )
The trigger guard appears to be plastic
If you know of any marks or clues that would allow me to date it would be most appreciated
. 
