Optimus No 1S

Greetings, everyone,
Today I want to show another Optimus No 1S from my collection; this time I tried to date it more precisely and seems to me, that it comes from the period 1925 - 1926. There are some differecies between this one presented today and this one presented previously. I bought it in a very good shape, regarding it's age. Let's start:



Original roaring burner:


and a dimpled spirit bowel:



Screw vent:



and filler cap ( both sides identically stamped ) :


The stamp on the side wall of the tank:


And on it's bottom ( export version ? ):

No other tamps present.

Works like new



Thanks for watching.
CU

 

@Stanisław Grajewski thanks for sharing another very nice classic! This in particular is very interesting for the unusual bottom stamping… so most probably a very well preserved Optimus made in Poland.

Cheers,

Nicola

 

@Nicola Francesco Elia
Or made in Sweden for Polish market ( not even a single Polish word on stamps )
Cheers
Stanisław

 

Nice post.

How do the preheating pan recesses work?

 

@Camp numao
When the flame restricts to this spot - it is time to start pumping.
Cheers
Stanisław

 

@Stanisław Grajewski

Thankyou.

 

@Stanisław Grajewski these stoves are probably made in the Optimus factory opened in Danzig around 1922. Correct @gieorgijewski ?

Nicola