Replacement Z Series Ranges
Sri Lanka : 2010-2018 : Series 11
Development, Prosperity and Sri Lanka Dancers

Replacement Notes were issued with prefix Z/2,Z/3,Z/10(Rs20), Z/3,Z/20(Rs50), Z/4,Z/30(Rs100), Z/5,Z/40(Rs500), Z/6,Z/50(Rs1000), Z/8,Z/60(Rs5000).

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Front Image	Value Rs	Date on Note	Prefix	Range of Replacement Serial #s	Replace K	Issue M	Replace per K	Lakdiva Note S#	Comment
	20	2010-01-01	Z/2	000001 - 437000	435.7	180	2.4	161858
	20	2010-01-01	Z/2	438001 - 683800	245.8	100	2.5	531563	+Coated
	20	2015-02-04	Z/2	684801 - 786000	101.2	130	0.8	685617
	20	2015-02-04	Z/3	000001 - 011800	11.8	4	3.0	011147	Rare
	20	2015-02-04	Z/10	000001 - 294100	294.1	95	3.1	088004
	20	2016-07-04	Z/10	295101 - 482000	186.9	85	2.2	311595
	50	2010-01-01	Z/3	000001 - 128100	124.1	100	1.2	000303
	50	2010-01-01	Z/3	128501 - 273000	143.5	40	3.6	224636	+Coated
	50	2015-02-04	Z/3	274001 - 321400	47.4	20	2.4	276807
	50	2016-07-04	Z/20	000001 - 191000	190.0	105	1.8	007976
	100	2010-01-01	Z/4	000001 - 360200	358.7	210	1.7	067816
	100	2010-01-01	Z/4	361201 - 606000	244.8	105	2.3	468285	+Coated
	100	2015-02-04	Z/4	607001 - 729000	122.0	50	2.4	659886
	100	2015-02-04	Z/30	000001 - 405000	405.0	105	3.8	125927	+Coated
	500	2010-01-01	Z/5	000001 - 220000 237601 - 322000	303.0	110	2.8	006301
	500	2015-02-04	Z/5	323001 - 345500	22.5	15	1.5	343086
	500	2013-11-15	Z/5	220001 - 237600	15.6	5	3.1	222284	CHOGM Rare
	500	2016-07-04	Z/40	000001 - 143800	143.8	55	2.6	017518	+Coated
	1000	2010-01-01	Z/6	000001 - 302500	301.5	195	1.5	032857
	1000	2015-02-04	Z/6	303501 - 326000	22.5	15	1.5	309129
	1000	2015-02-04	Z/50	000001 - 33??00	333.0	111	3.0	064825	+Coated
	1000	2016-07-04	Z/50	33??01 - 406000	73.0	28	3.0	385952
	1000	2018-02-04	Z70/1	000001 - 01500?	15.0	5	3.0	008853	Ind70
	5000	2010-01-01	Z/8	000001 - 088000	85.5	40	2.1	007248
	5000	2015-02-04	Z/8	089001 - 154600	64.6	35	1.8	126210
	5000	2015-02-04	Z/60	000001 - 03??01	115.0	5	3.3	032600	+Coated
	5000	2016-07-04	Z/60	03??01 - 115000		30		052544

+coated => Start of UV cured Post Print Varnish (UVPPV) applied on currency notes and these notes are slightly thicker.
The number of replacements increased from about 0.2% to 0.3% after this extra operation was introduced to increase the circulation lifetime of the notes. For the lower 3 denominations UVPPV was with the 2014 order imidway of the 2010 date issue. For the higher 3 denominations UVPPV was with the 2016 order and the adoption of the Z/10 to Z/60 prefixes for replacements.

All varieties of Replacement notes except the CHOGM Rs500 from the Lakdiva collection.
I thank collector A for the image of the CHOGM Rs500.
If you know of a 2013 CHOGM Rs500 replacement note for sale, VF or better please contact kavanr @ gmail.com

Range of Replacement Serial #s compiled from Reply to CBSL RTI 1/18 and 14/18 and E-mail reply of 2018/07/20 including information from CBSL website https://www.cbsl.gov.lk/en/notes-coins/notes-and-coins/notes-and-coins-statistics to correlate the range of issue of regular prefix with replacements.

Replace K is the Number of Replacement notes minted in Thousands. As there are sometimes small gaps between the ranges for same Date Type, the Total maybe slightly smaller than (End - Start) of replacement numbering.
The number of Replacement notes sent to CBSL among regular issue could also be smaller than the number of replacements allocated for use, as the remainder after print run is probably destroyed.

Issue M is the Total Number of regular Notes printed in Millions

Replace per K is the average Number of Replacement notes allocated per Thousands.

It has been observed that Replacement are not included sequentially.
I have an unopened pack of 100 which are all replacements which has two sequences.

There seems to be an Increase in Number of Replacement Notes used in Lower denominations. Is it caused by post UV print vanish application.

Rs. 20 Z/2 has a max of 786000. What cause to flip to Z/3 long before completing the million? CBSL Replied The selection of the replacement prefix and the serial numbers are purely business decisions mutually agreed by the CBSL and the printer.

On My Request for information on older Series CBSL replied
Information on issues after 1987.01.01 or 1996.02.01 are not available with both the CBSL and the printer. Please note that no replacement range was used in the recent production of currency notes.

In a letter dated 2018-06-22 CBSL informed Local Commercial Banks that Replacement Notes with special prefix Z will not be issued in the future and new currency note Bundles will not have an incremental progression from XXX001 to XXY000.

Please see Sri Lankan Replacement BankNotes: 1970 - 2018 for a more general discussion.