Hi Bobsky and welcome to the HOC
In 1999, the stock pickups were Schaller Golden 50s, a low output, PAF-style humbucker. Stock tuners would have been nickel-finished Grover Rotamatics. However...... Heritage is essentially a custom shop, building a fair proportion of its output to specific, individual orders. To this end, you can find many variants within the individual model type (e.g. H-535). That might explain some of the hardware differences on yours.
ASB is indeed Antique Sunburst.
Congratulations on your first Heritage - there'll be more in your life
Finally, we love pics. Did I mention that we live pics?