Okey dokey, my first attempt at putting photos on here so if it don't work i will be confirmed as the computer numpty i always thought i was

Got given 4 pretty much unopened tins each of these


http://farm3.static.flickr.com/2544/...c57214e4_b.jpg

http://farm4.static.flickr.com/3494/...546bc48e_b.jpg

http://farm3.static.flickr.com/2484/...a35caf4c_b.jpg

http://farm4.static.flickr.com/3456/...749f50d5_b.jpg

I've got a pretty good idea of their age but would like a second opinion