LouDeeter@aol.com wrote:
> Take a look at the decals in this auction. The auction says this Special
> Lightweight tubeset was later called 531c. I thought there was a subtle
> difference between 531c and 531SL, but I don't recall what it was. Anybody know?
>
> _http://ebay.com/<blah>
> emZ7198714576QQcategoryZ56197QQrdZ1QQcmdZViewItem_
> (http://ebay.com/<blah>
> 97QQrdZ1QQcmdZViewItem)
AFAIK, 531C was *NOT* the same as 531 Special Lightweight. 531C was the standard competition tubeset, while 531 Special Lightweight was essentially the same as 753, but not heat treated. 531 Special Lightweight became 531 Professional when the new style decals came out:
http://www.os2.dhs.org/
--
John (john@os2.dhs.org)
Appleton WI USA