Hack saw blade

[Krown Kustoms]

I know this sounds a little off, but I dulled my last hacksaw blade today, so I looked through some old tool boxes and found one.
The blade has like 20tpi at the front and progressively ends up at like 10 tpi at the back (I didn't count them)
This blade cut stainless like it was plastic,
My question is does anyone know what it could be made of so I can buy more.
The box I found it in probably hasn't been opened for 20 years.
My father in law passed away a little while back and I ended up with all of his tools and things.
Among the things were about a thousand drill bits and a bunch of various blades to cut metal, but everything is rusty and I cant make out sizes or company logos.
-B-

 

[rickharris]

http://henry2007.en.ec21.com/Variable_Pitch_Hacksaw_Blade--1811582_3449579.html are said to be vairable pitch but I can't tell from the write up or picture.

http://cgi.ebay.co.uk/Sealey-Hsb%2F1-Bi-Metal-300Mm-20%2F24Tpi-Hacksaw-Blade_W0QQitemZ400071590085QQcmdZViewItemQQimsxZ20090906?IMSfp=TL090906161003r2083 22 to 24 TPI

http://www.workshopsupplies.co.uk/index1.html 22 to 24 TPI

Search for variable Pitch hacksaw.