I think what Butlercreek might be asking is how many 18s Bunn Specials were marked "Adjusted to 6 Positions".
Russ is, of course, right. Factory ads clearly show that all 18 Bunn Specials were adjusted to 6 positions, however, some of the early ones were not marked as such. Just how many were marked is a complicated issue though. There is a way to get at a number in the fine book "Illinois Watch Co. Encyclopedia and Price Guide" by Meggers and Ehrhardt. This number, however is not accurate. As Russ, I and some others have discovered, some early examples, which are listed as not marked in this book are, in fact marked.
There are 2 theories as to why this may be, and both theories may be partially right. First is that people could send their watches back to the factory to be upgraded to Double Roller, and that when they came back, they were marked both "Double Roller" and "Adjusted to 6 Positions". The other theory is that many early movements sat around the factory for a few years before they sold. By the time they sold, other Bunn Speials had gone out the door with the new markings. Rather than sell the old stock for less, the factory went back and re-marked them.
Anyway, My estimate is that somewhere between 31 and 32 thousand 21 jewel open face 18s Bunn Specials were marked "Adjusted to 6 Positions". All but a few of the 23j 18s Bunn Specials were marked this way.
President, Indiana Chapter 18 - NAWCC
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