Late 60’s would be my guess. It is a 5 digit serial, but a low number, probably from the first years of the 5 digit serial numbers. If I had to guess, and it would be a guess, I would say 67-68. It is definitely before the 70’s, and newer than the example earlier in this thread. Specific years are beyond my skills. It is attractive to think the 0 would be 1970, but I think it is earlier than that, and probably pre 1969, as some 69s seem to have 1 prefix 5 digit numbers. As I said in my previous post, Aria serial numbers are not so great at nailing down a specific date, but this is my best guess and fits what I have seen. There are definitely serial numbers that are used not in order, but the most likely case is that this is late 60's.