I bought my 1987 coupe with 114K miles, in 1998. It's not too far off from yours. It had a new clutch and just did timing belt. I paid $5400 back then, and that wasn't a special price. So ten years later a similar car is not worth the same amount. I mean, I get it is worth the same because this is one of the best cars ever made, but you have to compete with the other cars on the market and the buyer's expectations.
I think KBB gives 10% depreciation per year. Someone couldn't sell a nice 1990 gold coupe 5 speed over here for $2,000 with 120K miles. I think you might be lucky to get $2500 for yours.
My coupe now has 253,000 miles and is still going strong. Mechanically it drives well, it has some cosmetic issues. This is the 1987 collectors item first year production model of the coupe, it is a 5 speed. I am near San Jose, California if anyone is interested. $1395
1987 Acura Legend Coupe 5-Speed VVVVRRRROOOOOOOOMMMM!!!!
Also check out someone has a 1990 with 45K miles,
1990 Acura Legend Ls With Ultra Low Original Miles. ( Flawless )
anyway, good luck selling yours for the most $cash$