Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_49495 ( "Issued" real, "Type" text, "Design" text, "Serial format" text, "Serials issued" text )

### Question ###
What is the serial format for white on blue with a serial issued of ss-00-00 to zz-99-99?

### Accurate SQL ###

SELECT "Serial format" FROM table_49495 WHERE "Design" = 'white on blue' AND "Serials issued" = 'ss-00-00 to zz-99-99'