You will be delighted. I've got an 18-3, a 14-3 and a 15-3 in the 1K ser# range that are a total of 8000 numbers apart. Back then they kept making small batches to keep their "experts" working. Good quality even if Bangor Punta was in charge.
18-3 # 1K 63xx and 14-3 1K 23xx. Joe