World Coin Database – Date Systems Guide

Date Systems: Thailand


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Thai coins were not dated before 1874, and since have used three different dating systems.

Step 1

Thai dates are read from left to right and use Thai numerals.
Using the table below, locate a series of three to four numerals.
Most B.E. coins will have the date system characters before the number (see Step 2).

0
1
2
3
4
5
6
7
8
9










Step 2

Determine the date system (era) by finding which range the number from Step 1 is included (more or less).

Characters
Date System
Number Range
Dates Used (AD)

จ.ศ.
Chula Sakarat (CS)
1236 – 1244
1874 – 1882

ร.ศ.
Rattanakosin Sok (RS)
106 – 129
1887 – 1910

พ.ศ.
Buddhist Era (BE)
2458 & Up
1915 – Present

Step 3

Take the number from Step 1, and add the corresponding offset for the date system found in Step 2.
See the examples below.

Characters
Thai Year
Conversion

๑ ๒ ๓ ๖
CS1236
1236 + 638 = AD1874

๑ ๒ ๓
RS123
123 + 1781 = AD1904

พ.ศ. ๒ ๕ ๔ ๘
BE2548
2548 – 543 = AD2005

Trả lời

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