Ive always wanted to buy a Marlin 39a, and have the opportunity to buy one now and have a few quick questions. 10252633 is the serial number, which i think means it was made in 1990? Cross bolt safety was added in 83 correct? So this would have a safety? How well will is this 'newer' gun built compared to my older Marlins? Should i get this one, or keep looking for an older one?