manufacture date from stamp on pump top

[blgreef]

How can one tell the manufacture date from the pump ?

 

[rvitko]

Their is a three digit number embossed on the top back of the pump. It decodes as, series, quarter, year so 345 is the 3rd series (generally 3rd week in the quarter), winter, 2005.

 

[blgreef]

cheers roger thanks for the help,

and a little late but happy new year.