Quote Originally Posted by R.Gould View Post
The opemus 3 came out in 1969, and was made until 1975, when the 4 was prouduced, it was the last opemus without a filter draw, with the 4 also came the MG and colour head as they expanded the range, they were all so well made that they last forever.
Didn't know the history, makes sense though, before the 70's almost nobody did colour at home, and MG B&W paper wasn't around yet, so filter drawers were not really needed. An enlarger is so mechanically simple that they should last pretty much forever, the colour ones with built in filters, maybe not, I don't know how the filters actually work on those. About the only reason to replace one is if the manufacturer used a proprietary bulb that is no longer available, and altering it to use a different bulb isn't possible.