amp question

["Dapper Dan" <dapper@xxxxxxxxxx>]

Okay, fellow harp-lers I need some advice and info.  I have an old
> Silvertone amp model#1392, chassis #185  10200.  The speaker that was in
it
> was a 12" Jensen, obviously not original issue.  The original, I believe
was
> a 10" alnico speaker.  The aperture in the baffle is 9 1/2".  Got any
> reccomendations what to install.  Also, anyone have any idea by the
chassis
> or model numbers what year it was made?  I think it is a Danelectro sold
> under the Sears brand.  Dan Axt
>