Got a Minerva...
 

...Ystrday at an Anty-Kew Shoppe in Morristown that was closing. Nice wooden case tabletop, works, needs controls de-oxited, the nice civilian what had it removed ALL the labels/tube charts, Thanks, Dude ! But it has a tone control, & just looking at it, I'd figger LATE pre-war/postwar. The Dial Glass is flaking BADLY, I was doing good to tell its a Minerva. I needed it like I need another Whole in my Head, but it was a pretty day, LA & I were out having fun rummaging thru Anty-Kue shoppes, & I got it for $35. Anybody got any info on Minerva ? I know they were in LA, from the dial glass, but that's about it.

Update-I looked at the dial glass a little more closely-Again, it is flaking BADLY, but I can make out "Minerva Corp Of America", NOT "Los Angeles" like I previously thought. This might end up bein' Fun, tracking this 'un down !

I put "minerva" into the search index at Cape Old Radio[ and came up with this list.

Any idea what the tube lineup is ?

1 :: Minverva Corp. of America, Model 114, Volume–Page: 15-1
2 :: Minverva Corp. of America, Model 410, Volume–Page: 19-3
3 :: Minverva Corp. of America, Model 411, Volume–Page: 19-3
4 :: Minverva Corp. of America, Model 729 Portopal, Volume–Page: 16-1
5 :: Minverva Corp. of America, Model L702, Volume–Page: 15-8
6 :: Minverva Corp. of America, Model W117 Early, Volume–Page: 15-2
7 :: Minverva Corp. of America, Model W117 Late, Volume–Page: 15-5
8 :: Minverva Corp. of America, Model W117-3, Volume–Page: 15-2
9 :: Minverva Corp. of America, Model W117-3, Volume–Page: 15-4
10 :: Minverva Corp. of America, Model W119, Volume–Page: 15-7
11 :: Minverva Corp. of America, Model W119A, Volume–Page: 15-7
12 :: Minverva Corp. of America, Model W702, Volume–Page: 15-8
13 :: Minverva Corp. of America, Model W702, Volume–Page: 18-1
14 :: Minverva Corp. of America, Model W725, Volume–Page: 19-1
15 :: Minverva Corp. of America, Model W729 Portopal, Volume–Page: 18-4


Found some at Nostalgia air too: http://www.nostalgiaair.org/resources/258/T0000258.htm

I have two Minerva Tropic Masters and a Porta Pal. The Tropic Masters have kind of a different approach to the bias circuit. Also strange to me, in uses a solid wire buss for the B+. It's easy to make a mistake when working on it, thinking that is a B- return. I don't think they were in business very long.