Old welding rods !!!!

[CRS51]

Hello all, have been in the yellow cupboard again and dug out some very old welding rods, anyone know just how old they are ?
Cheers Chris.

 

[pointer2null]

about 42

 

[TechnicAl]

Ive no idea. They look old.

http://www.weldability-sif.com/media/catalogue/v6_pdf/weldability_sif_catalogue_127.pdf

These people are the descendents of the SIF brand