Data base description

The data base has been built on a Excel file.

The first page contains all the information of the coins registered:

The name of every coin is composed by its RIC code plus a sequential number.

        Example:
 

Coins restoring DIVO AUGUSTO with eagle on the reverse are referenced as: 77-001, 77-002...
        .
        .

Coins restoring DIVO TRAIANO with pyre on the reverse will be numbered as: 86-001, 86-002.....
        .
        .
In the case of DIVO ALEXANDRO with a pyre, they will be: 98-001, 98-002.....
 
 

Obverse dies are referenced as follows: the name of the emperor restored (2 char.) plus a sequential number.
Ex.: VE01, VE02......VE50

Reverse dies are named by the motive (Aquila, Pyra) plus a sequential number as follows:
Ex.: A001,A002.....    P001,P002.....
The reverse of the hybrids will be referenced as: IM, VA, PA. Depending on their typology.

Partial view of the table for the coins restoring Nerva

Statistical data is automatically calculated when a new coin is included.


Distribution for typologies is also automatically calculated every time we include a new coin 

 

Reverses rarity

Rarity, Estimated dies and Dorchester hoard


The estimation of the original dies number is also automatically adjusted with new coins. 
 
Obverse
Type
Emperor		 Total
Coins		 % Reverse
type
Eagle		 % Reverse
type
Pyre		 %
Augusto 255 12%    69 8%    186 14%   
Vespasiano 251 12%    108 13%    143 11%   
Tito 204 9%    76 9%    128 10%   
Nervae 104 5%    31 4%    73 5%   
Traiano 310 14%    106 13%    204 15%   
Hadriano 68 3%    41 5%    27 2%   
Antonino P. 413 19%    100 12%    313 24%   
Marco 72 3%    45 5%    27 2%   
Commodo 181 8%    89 11%    92 7%   
Severo 83 4%    55 6%    28 2%   
Alexandro 235 11%    127 15%    108 8%   
Total 2176 100% 847 39%    1329 61%   

 
Emperor Coins
Registered		 Diferent
Dies
Known		 Rate
Coins/
Known Dies		 Number of Original Dies
Estimated by Goods' Method
Dies Stand.Dev. Singletons %Known
Augusto 255 65 3,92 68 2 10 96,1%
Vespasiano 251 72 3,49 77 3 17 93,2%
Tito 204 47 4,34 49 2 10 95,1%
Nervae 104 19 5,47 20 1 5 95,2%
Traiano 310 87 3,56 93 3 21 93,2%
Hadriano 68 22 3,09 26 2 11 83,8%
Antonino 413 92 4,49 97 2 22 94,7%
Marco 72 18 4,00 19 1 3 95,8%
Commodo 181 44 4,11 46 2 6 96,7%
Severo 83 19 4,37 20 1 4 95,2%
Alexandro 235 49 4,80 58 2 37 84,3%
Total 2176 534 4,07 572 6 146 93,3%


Related to the data base, a new software is being developed, it builds the die-link trees and makes an accounting of the coins involved in everyone.

This illustration shows part of the main tree which involves the 81% of the coins registered in the data base. Every line referenced a pair of dies and a coin minted with them. The following line references the same information for a coin linked with the precedent one. 

Ex.: Coin 90-010 links by its obverse(AN06) with the coin 89-031, 90-001 y la 90-043. The last one links with 90-034 and 90-082 by its reverse(P096), etc......
This illustration shows a fragment of the main tree which involves the hybrid coins (78-021 y 78-042) with other 730 coins registered. Some of them are shown in the following picture. 

Pictures courtesy of: