I bought a Petromax 827, and I wonder what the manufacture date is. On the bottom it's stamped 3405, and from what I understand from browsing on the forum, that would mean that if the lamp was made in the 60's, that would be week 34, 1960, friday (day 5). But how do I know my lamp was made in the 60's and not another decade? Here are some pictures and details from the lamp: Datecode: Lamp front and back: Stamped logo: Model plate: Glas: pumpknob: Can anyone confirm my date of week34 1960 day5 or have pointers that it's the wrong decade/another date? Thanks.
This Petromax 827 was manufactured in 1970 and not 1960.I have marked 4 distinguishing features.In 1960 there were no stamped numbers but rather scratches.
