Sounds reasonable, Don, but I know I've seen plenty of Erlanger decks that don't have a 4-digit number before the AoS code. I'm thinking more recent, but no doubt if you can tell which week of the year it was made it definitely narrows it down even more. That coding system is pretty common, though most (overseas) seem to make it YYWW instead of WWYY, had been used on computer chips and similar for decades, actually. If you've seen the inside of a computer you've seen them stamped on anything we used to call "solid state" which is basically everything these days but hard drive reading arms. 9401 being the first week of January '94 for example.
I found this little jewel on ebay and swooped it last night, wondered if Tom might could ID it. Pretty obvious it's an Aristocrat pair, but beyond that without opening it I'm not going to be able to tell much. I'll post some pix and see what you think. (and yes, Tom - I know you're in Florida right now, so take your time - absolutely no hurry, just curious - as always!)