Well, it's not a 1987 Lemans RS.

Cosmetic/graphics differences:
1987 RS had a red Tange 2 sticker on the seat tube. OP's bike sure looks like it has an Infinity sticker there.
The fork on the RS had yellow inside the crown cutouts, Mangalloy stickers, and "Centurion" on the flat crown.
Other frame graphics look the same.
The OP's bike has no top tube decal left, which is odd because it was under the clear coat.

Component differences:
1987 RS did not have a Tange headset like that. It may have been Tange, but it was not labeled in any way, and the lower race was squared off.
Wheels are N/A, because those are obviously not the OEM wheels. OEM on the RS were bronze Araya 700c.
Brakeset on the RS was Exage SLR. This brakeset is DC, very similar to the brakeset on the '86 Ironman, but not exactly. I figure a replacement.
Housing on the RS was red, which in sunlight over time = pink.
1987 Lemans RS had 2x7 indexed LX100 shifters, FD, RD. The OP appears to be 2x6.
1987 Lemans RS had a slightly darker crankset, not a brightly polished crankset, if I recall.

This could be a "straight" Lemans, which I've never seen, from 1987.

This could also be a Lemans/Lemans RS from 1986, which would have put it one step below the Elite RS, two below the Ironman. The Infinity sticker lends support to 1986, as do the DC calipers, but white hoods? I doubt it.

Only a catalog would know for sure, but the next post could be right on the money. I've not seen a black Accordo, and know little about that model.