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Coins - 1988 Proof Set Certificate with Coin Specifications

With minor changes, the US Mint continued the addition of a pale purple card in the 1988 proof set box with the details about each of the five proof coins in the set. The card, slightly smaller in length and width, easily fit in the proof set box with the lens holding the proof coins.

1988 Proof Set Contents 

On one side of the thick card stock included with the 1988 proof set, the Treasury Department's seal for the US Mint is printed in purple ink. The seal includes a shield with a set of scales at the top and a key at the bottom separated by thirteen stars in a chevron pattern. Around the seal are the words "Treasury" at the top and "United States Mint" at the bottom. 

1988 Proof Set Treasury Seal 

The purple card's opposite side holds the information about the coins in the proof set. In bold purple ink, the title on the card states: "United States Mint Proof Coin Set" with a smaller printed subtitle of "Specifications."

1988 Proof Set Coin Specifications 

The specifications for the coins in the 1988 annual Proof Set: 

 Denomination  Cent Nickel Dime  Quarter  Half Dollar

 Obverse

 Lincoln

Jefferson 

Roosevelt

Washington

Kennedy

Designed by

  V.D. Brenner

  Felix Schlag

  John R. Sinnock

John
Flanagan

Gilroy
Roberts

Reverse

 Lincoln Memorial

Montecello

Torch, Olive Branch, Oak Branch

Heraldic Eagle

Heraldic Eagle

Designed by

 Frank
Gasparro

 Felix Schlag

 John R. Sinnock

John
Flanagan

Frank Gasparro

Composition

Copper Plated Zinc 2.5% Cu Balance Zn

Cupro-Nickel

25% Ni
Balance Cu

Cupro-Nickel
Clad
8.33% Ni
Balance Cu

Cupro-Nickel
Clad
8.33% Ni
Balance Cu

Cupro-Nickel
Clad
8.33% Ni
Balance Cu

Standard
Weight

 2.500 g

5.000 g

2.268 g

5.670 g

11.340 g

Standard
Diameter

 0.750 in
19.05 mm

 0.835 in
21.21 mm

 0.705 in
17.91 mm

0.955 in
24.26 mm

1.205 in
30.61 mm

Edge

 Plain

Plain

Reeded

Reeded

Reeded

In later sets, the US Mint advises, "To preserve the beauty of your Proof Set, it should be stored in a cool, dry place."

Click 1988 Proof Set to view the contents of the proof set package. 

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