Citizen men's 2510-S004519 HSX quartz watch

citizen men's 2510-S004519 HSX quartz watch 2 tone bracelet band Black dial driver I found this when I was cleaning out a drawer. Hasn't been worn for probably more than 20 years. it's still in the original box, but needs a new battery. Hubby says it worked fine when he put it away. I have some idea of what it's worth but not exactly... make an offer if you're interested