Photos from Jim MacIndoe in San Diego in 2013. Manufacturer unknown at the time.

More photos from an eBay ad in 2014 erroneously claiming it to be a Plasticon hardtop.

On 10/19/2014, Ken Curtis wrote:
"This hardtop is actually made by a company called Thompson Fiberglass of Seattle. I know because I bought the one you note on ebay. The Plasticon reference was an innocent mistake by the seller, because the history file showed that the previous owner had enquired after a Plasticon top in 1959. In fact, what he actually bought was a Thompson top in 1967. The brochure (2 pages) showed that Thompson made tops for, Sprites, Midgets, TR2 + 3 and 4, Spitfire. MGA, Healey six + 3000, MGB, Datsun Fairlady and Alfa Romeo Guilia and Guilietta. Finished in OE White, Black, Flame Red, Spa White, Egg Shell, BR Green and Datsun Red. MGA top cost $189. The Plasticon top cost $149 in 1959 and looks very similar to the factory fibreglass top".



Addendum April 26, 2021:
Another photo from Terry Armitage in Sundre, AB, Canada.


Addendum November 24 2016:
Not exactly sure yet, but this one (below) looks a lot like the one above without the quarter windows. So until shown otherwise, I will call this one also a Thompson Fiberglass hadtop. Photos compliments of David Heye in Algona, Washington, USA.


Addendum July 19, 2021:
Here is one that came up on bringatrailer.com from Washington state as part of a resto-mod MGA with V8 engine conversion and a trailer. This one must be a Thompson Fiberglass top, as it is virtually identical except for shape of the quarterlight windows. Assuming so, we now have three variants of the Thompson tops, large quarterlight, small quarterlight, and no quarterlight. I like the aesthetics of this smaller quarterlight the best, just a matter of personal preference.