The older Peaveys have a definitive record of serial numbers. It's the Cirrus, Millennium, etc, you know the big guns of Peavey that you had to call them and they'd have the date it was made, what wood was used. There has to be someone who has access to those records, but who ?I should have added the word "labeling" to the sentence "inconsistancy of Peavey." I wasn't addressing build quality at all. My point is that being a company there should be a consistancy in the placement of serial numbers and where the item was made. My opinion is based on the fact that there were serial numbers stamped, painted, and ingraved on the headstock, not present at all, or on stickers some of which were on the back of the battery cover or the back of the control cavity cover or both, some have it on the top of the cover. Some have USA on them and like mine which has the sticker under both covers and neither have USA on them. The confusion this has caused is evident in the varied responses I received in my search to find where my bass was made. The conclusion was either look at the front of the headstock for BXP or know that USA models have the ABM bridge (I'm addressing specifically the Cirrus) and the imports have the individual "finger" style bridges. However, I recently found out there are USA Cirri with finger style bridges. So looking at the bridge is not a sure fire method either. I would not be suprised if there are import Cirri without BXP written on the headstock.
So, when it comes to your Cirrus the best WE can do here is make an educated guess. For example, does your Cirrus have a block logo or script logo ? If it's block, it can be 1998-2006. It it starts with a 0**** or 105*** it's probably an earlier one like '99-'02. A 5**** it's probably around a 2006. That's from MY experience.