Originally Posted by
WIChix
...Is the aluminum one of those model #designations with a "k" in it, eg: 15k125?
No, I don't think so, but I'm not entirely sure either. I know all 201K23s are aluminium, and this sub-model 201 was only made in the Kilbowie (K) factory in Scotland. It came as electrical, hand crank and treadle, most by far is electrical. For other models that for the most part were cast iron, there sometimes made a few batches of cast aluminum, like early 99s, a few 185Ks turn up in aluminum ( I don't know if they were exclusive to the Kilbowie factory?). These tend to fetch a bit of extra interest when portability is a concern. I don't know about any aluminium 15 first hand.