Obverse - National Monument and Saat gombuj Masjid (Mosque with seven domes).
Date of Issue : 24-10-2004
Security Feature: The Optical Variable Ink (OVI) has been used in the bangla inscription
instead of numeric 
. When titled up and down the optically variable colour of on obverse of the note will change from a distinct magenta to green and green to magenta as well. Holographic window type security thread. Dot for the blind. Latent image. Head of a Royal Bengal tiger in cylinder mould made watermark and logo of Bangladesh Bank in electrotype watermark.
Obverse - National Monument and Saat gombuj Masjid (Mosque with seven domes)
Date of Issue : 17-07-2002
Security Feature:Colour shifting ink (OVI). Holographic window type security thread with micro printing" বাংলাদেশ ব্যাংক”. Dot for the blind. Latent image. Head of a Royal Bengal tiger in cylinder mould made watermark and logo of Bangladesh Bank in electrotype watermark.
Obverse -Portrait of Sheikh Mujibur Rahman and Saat gombuj Masjid (Mosque with seven domes).
Date of Issue : 10-08-2000
Security Feature: Colour shifting ink (OVI). Latent image. Coloured holographic security thread with micro printing" বাংলাদেশ ব্যাংক”. Dot for the blind. Watermark of tiger head and monogram of Bangladesh Bank.
Obverse - Picture of National Monument.
Date of Issue : 02-07-1998
Security Feature:Window type security thread with micro printing" বাংলাদেশ ব্যাংক” in the right hand side and watermark of head of Royal Bengal Tiger in the left hand side.
Obverse - TARA Mosque, Dhaka. (The Star Mosque).
Date of Issue : 15-06-1991
Security Feature: Silver color & Window type security thread with micro printing 'Bangladesh Bank' and '500 taka' in Bengali in the right hand side of the note. Water mark depicting the head of a Royal Bengal Tiger in sitting posture in the left hand side and a water mark containing the figure 500 in Bengali in the center. All other features remain same as before.
Obverse - TARA Mosque, Dhaka. (The Star Mosque).
Date of Issue : 15-12-1976
Security Feature:Security thread in the right hand side with micro printing" বাংলাদেশ ব্যাংক”. Water mark depicting the head of a Royal Bengal Tiger in sitting posture in the left hand side and a water mark containing the figure 500 in Bengali in the center. Intaglio printing on the front of the note is done with three colors: blue, purple and black for the first time on a Bangladeshi note. Mirror image of water lily in the lower portion of water mark area.