'AL' prefix indicates 1973.
There are two variations of the .38 S&W Model 925. 1st is the 4" barrel with "magna" style grip frame and hard wood stained grip panels. The 2nd is the 2.5" barrel with a modified bird's head "plastic" wood grain two piece wrap around panels. The more common type is the short barrel and in good , between 80% and 90% the current RETAIL value is running in the $135 - $160 range. For the 4" barrel, add about $15 to $25. There is also a .22 version in the 4", that one is worth about 50 to 75% (per cent) more because of scarcity. ALSO, the .38s were made with live firing pin up to '73, next version had transfer bar iginition system, which your friend's piece should have and being made in '73 should also be the shorter barrel. The later version sells at RETAIL for about the same.