These 'Stratotone'-based Silvertones were from our friends at 'H Co.' That's the name that would sometimes appear on Sears boxes to try and disguise the fact that they were in fact, Harmony made guitars.
Click for catalog listings
The 1326, 1327, 1420 and 1421are all Stratotone-derived axes from Harmony. The 132X series was a nice 'shaded sunburst' available in 1 or two p/u models with a brief window of availability that makes them quite a bit more rare than their siblings, the more widely available 1420 and 1421. These were two-pickups guitars available in black and 'shaded walnut.' In today's collectors market, 1420 models abound... the 1421, 1326 & 1327... not so much.
1326/27 Spring/Summer 1959
1420/21 Fall/Winter 1959
Click on the different guitars for individual gallleris