Bought this bike a few weeks ago i just want to know what it is.

A full picture of the bike would help!

Let's see, it has a 1987 serial number. The rear derailleur is an obvious replacement. The lower headest cup appears to be Shimano New 600EX and if we assume that to be OEM, it should be a Bianchi Limited. However, the headset could be a replacement too, so just too be sure, a nice overall picture and knowing the tubeset would be a big help.

That color looks odd and I don't see a B on the crown which might be a sign of an '88 but I agree we need more pics and information. The front brake and wheels (well the rim at least) don't look OEM either.

Where is this bike?

Agreed, I thought it was sort of half way between Bianchi's celeste and turquoise, depending on which photo you're looking at. However, it could be a foreign market model or a repaint.

The brake caliper and rear derailleur are almost certainly upgrades. The headset is the right era but that doesn't mean it is OEM.

hope this helps

Definitely a frankenbike, repainted and redecaled in Pantini era team livery. Based on the features, it appears to be one of the mid-range Formula II tubesets and based on what appears to be a Shimano New 600EX headset, was probably originally a 1987 Bianchi Limited

Any idea on the BB threading?

Based on the serial number it is an Italian manufactured frame, so expect that perverse standard with metric pitch diameter and imperial thread count.

Ok I'm new to the bike thing so you guys at all talking over my head. But thank you all for the info

My next question is what is its value.

Ok, let's try to explain the some things.

The frame appears to be from a 1987 Bianchi Limited, which was mid-range model. The tubing is Bianchi's proprietary Formula II, which is a double butted tubeset that we suspect was based on Columbus Cromor, which in turn was a well respected, mid-range tubeset.

The bicycle was repainted and decaled in the livery used by the Bianchi team bicycles in the late 1990s. Pantini was Bianchi's star rider during this period and he won the Giro d'Italia and Tour de France in 1998 for Bianchi.

The bicycle is updated with newer components but not all of them all are new. When a bicycle is assembled from a mix of parts, either different brands, models and/or eras, it is called after frankenbike, after Frankenstein's monster, which was assembled using parts from diferent human beings.

Being assembled in Italy, it uses Italian threading for attaching parts to the frame. There are three common bicycle threading standards. French threading is a metric standard. English threading is an imperial standard. Italian theading, for some unknown reason uses threading which has both metric and imperial dimensions, which is poor engineering.

I trust this clears up most issues. If not, just let us know and we'll enlighten you.

Yes you all have been a ton of help i did a lot if looking before I came on the forum so I knew about the pantini bikes of the late 90s and I also knew the paint was a different color than the water bottle cage. I got lost when asked about the bottom bracket threads i never realize all the different threads. But now I have been givin a little wisdom and I thank you all!!!!

A friend of mine has a replica of the frame that Pantani used. Yours is a replica of a replica.