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        20 Rupees Central Bank of Sri Lanka 70th Anniversary    
    
| Issuer | Sri Lanka (1972-date) | 
| Year | 2020 | 
| Type | Non-circulating coin | 
| Value | 20 Rupees | 
| Currency | Rupee (1972-date) | 
| Composition | Aluminium bronze | 
| Weight | 8.7 g | 
| Dimensions | 28 mm | 
| Thickness | 2 mm | 
| Shape and Technique | Equilateral curve heptagon (7-sided) Milled | 
| Orientation | Medal alignment ↑↑ | 
| Engraver(s) |  | 
| In circulation to |  | 
| Reference(s) |  KM#226a | 
 
                    
| Obverse description | Image of the Head Office building of the Central Bank of Sri Lanka, with three Flags on posts in front | 
| Obverse script |  | 
| Obverse lettering | Central Bank of Sri Lanka
70
1950-2020 | 
| Reverse description | Value and Year | 
| Reverse script |  | 
| Reverse lettering | 20 Twenty Rupees 2020
In English, Sinhala and Tamil | 
| Edge | Plain | 
| Mint |  | 
| Mintage | 2020  -  - 3 000
  | 
| Catalog ID | 5935398170 | 
| Comments |  |