Boron Ace--stiffest and most expensive of the "Aces"
Black Ace--100% graphite, next stiffest and next most expensive
Silver Ace--80% graphite, 20% Fiberglass--nice hitting frame. I have one, although back in the 80's, I used the Black Ace
Bronze Ace--60% graphite, 40% Fiberglass
Copper Ace--40% graphite, 60% fiberglass--very flexible
Golden Ace--Wood with graphite overlays--I have some of these and they are nice too.

Fiber Acer-- 
classic graphite tennis frame from the 1980s. 
The racquets are in new, never used, mint condition. 
4 1/2 grip.
Weight: approx. 12.oz unstrung 12.7oz strung. 
Headsize: Midsize, approx. 85-90sq.in. 
String pattern: 16 main strings (number cross strings is 18 or 19). 
Flex: flexible racquet contains fiberglass.

There were a few other Aces (Diamond Ace, Ceramic Ace, Ace Pro, Composite Ace, Junior Ace, Power Ace, Silver Ace Prophecy, Tour Ace, and Tournament Ace)
Diamond Aces were rare (these were really the most expensive). Most of the others came later and were relegated to discount stores. Some models, like the Black Ace, Copper Ace and a few others came with different string patterns. You could get these in a 16 X 19, 18 x 20 etc, similar to today's Pro Staff 6.1 models

If your Silver Ace is from the early 80s, it is black, blue, & white.
And it is roughly 86 sq. in., not 90.

The original Black Ace came out in the early 80s, is black with red piping, and carries a '98' moniker that no-one seems to know the meaning of.
This racquet is not 90 sq. in., either - it is about 86 sq. in.

About 10 years after the originals, Pro Kennex came out with larger versions of some of the 'Aces' - Silver, Copper, and I think Black. These are 90 sq. in., I believe.

I know the originals (early 80s) definitely were not 90 sq. in.

Of the originals, I liked the Copper Ace best - had a couple of them. Wonderful feel in those things. And it was relatively cheap - cheaper than the Black and Silver, both of which were quite popular at the time - especially the Silver. They - along with the Wilson Sting - were everywhere in the early 80s. Those Silver Aces also tended to crack.