Assistance identifying a tail rotor

[ROBBIESWORLD]

Hi guys, I just acquired this tail rotor and was wondering if someone here can tell me what helo this was on. I just cannot seem to figure it out. Thank you in advance Robbie

<a href="http://s4.photobucket.com/user/Robbiesworld/media/Mobile%20Uploads/Screenshot_2015-12-13-06-23-10_zpsheikguvg.png.html"target="_blank"><img src="http://i4.photobucket.com/albums/y144/Robbiesworld/Mobile%20Uploads/Screenshot_2015-12-13-06-23-10_zpsheikguvg.png" border="0" alt=" photo Screenshot_2015-12-13-06-23-10_zpsheikguvg.png"/></a>

[Nearly Retired]

Astar, of course. Or Twinstar perhaps

[Gomer Pylot]

Spam spam spam spam spam spam

[adam32]

CH-53K

[Wally]

Some Astars and Twinstars have identical rotors. That T/R has the trailing edge tab, could be 350B2 (don't recall BA having a tab) and later or an 355F1 and later.