Cannondale mid-90s Serial Number

Picked up a mid-90s Beast of the East (Beast decal is on non-drive chainstay, so not shown in photo below) and trying to date it. The head tube/headset is for 1 1/4 steerer, and it has the cantilevered rear dropout. Based on those bits of info and catalog info and color, I'm thinking that it may be a '94 but not enough info to be sure. Was C'dale using stickers/decals to affix serial numbers at that time? I found the serial no location info below in Vintage Cannondale and I'm guessing the numbers would have been on a sticker rather than stamped into the bottom bracket (no numbers stamped on this BB and also looked on dropouts, seat tube, seat stays, head tube, etc. There are some tiny stampings on the non-driveside rear dropout ("19" and either "1B" or "IB") and driveside rear dropout ("3") If that's "IB" on the non-drive dropout, I suppose that could mean Feb 1997, but the frame has the 1990-96 style headtube decal, and also I believe the '97 Beast had a 1 1/8 steerer. I don't think any of the components are original so no help there. I believe the Indy fork is a '97 and other components are mainly XT-739 series (except that purple Cook Bros crankset and a Chris King headset) which I think came a few years later than this frame. If anyone has a similar mid-90s Beast, it would be very helpful to know where the serial number is on your bike.