Identify peep aperture sight?

[rockogrease]

Does anyone know what peep this is? It’s off of my 513-T Remington Matchmaster with a Redfield rear sight. It says Parker Hale Ref. HB made in England. It’s a little too small for my eyes in anything but perfect light conditions.

066861BA-9C7A-488E-BB13-F68DF584344F.jpg

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[stevie]

[ATTACH]752437[/ATTACH]

[ATTACH]752438[/ATTACH]

No idea

You can get a replacement for the Redfield 75 here:

http://aperturesnmore.com/category.sc?categoryId=12