Pics?
It doesn't sound quite right to me.
I do own a special order H150 from 1998. It was a dealer special order, they made a run of them, maybe a few runs of them. It is a standard H150 but it came with SD 59 pickups and a Nashville tune-o-matic bridge and a zinc stop bar, instead of the typical Schaller pickups, bridge and tail at the time.
But it bears a regular serial number and it has the normal sticker under the control cavity cover.