Pre 1950 Mark 1 or Post 1950 slender?

[Rick Sparks]

I'm puzzled. The pen in this set has the aero-metric vent hole in the end of the barrel, but it has the hoop-style filler design. There's no date code. The barrel is a very dark blue, but I don't know if it's the cedar blue (that's my guess actually) of the '41 to '48 "51"s or the midnight blue of the 1950 and beyond. Please help me identify and date this set. I can't sleep nights. And my work is beginning to slip. Thanks.

 

 

 

[fibreglass_works]

if this is a Aero P51 pen set. IMHO that could be a loyal blue (Hard to come by too)

Cedar blue are more for the name to a p51 Vac while Aero named as teal blue, mid night blue (almost the same to teal blue), last the loyal blue (hard to come by). Looking at the set, and the pencil tell me that is more to the loyal blue Aero set after 1950.

The box are more for the Vac. if the Pen is a Vac, Cedar blue will be right but then again the pencils belong to a Aero insteads.

You should get yourself a good sleep by now......

Hope I am giving the right information.

 

I'm puzzled....or the midnight blue of the 1950 and beyond. Please help me identify and date this set. I can't sleep nights. And my work is beginning to slip. Thanks.

 

[OldGriz]

According to the Parker 51 book there is no color known as Loyal Blue...

I have never even heard of a reference to that color until today...

The Parker Aerometric pens came in teal, midnight and dark blue.

With the dark blue being found on later 51s..

Cedar Blue was only found on the 51 Vac pens and not on Aeros...

 

Seeing as the pen has no date code it may very likely have been made after 1952 when Parker stopped adding the date code to the 51

[Rick Sparks]

According to the Parker 51 book there is no color known as Loyal Blue...

I have never even heard of a reference to that color until today...

The Parker Aerometric pens came in teal, midnight and dark blue.

With the dark blue being found on later 51s..

Cedar Blue was only found on the 51 Vac pens and not on Aeros...

 

Seeing as the pen has no date code it may very likely have been made after 1952 when Parker stopped adding the date code to the 51

 

Griz, Which Parker 51 book are you referring to? I'd like to get a copy. Thanks.

[OldGriz]

According to the Parker 51 book there is no color known as Loyal Blue...

I have never even heard of a reference to that color until today...

The Parker Aerometric pens came in teal, midnight and dark blue.

With the dark blue being found on later 51s..

Cedar Blue was only found on the 51 Vac pens and not on Aeros...

 

Seeing as the pen has no date code it may very likely have been made after 1952 when Parker stopped adding the date code to the 51

 

Griz, Which Parker 51 book are you referring to? I'd like to get a copy. Thanks.

 

There is only one book on the Parker 51... Pendemonium is selling it

It was written by David and Mark Shepherd in collaboration with Parker

If you are into 51s... it is a must have reference book... not at all cheap, but well worth having

 

[Rick Sparks]

 

 

There is only one book on the Parker 51... Pendemonium is selling it

It was written by David and Mark Shepherd in collaboration with Parker

If you are into 51s... it is a must have reference book... not at all cheap, but well worth having

 

 

Thanks for the info. I'm on my way to pendemonium. Cheers!

[Rick Sparks]

If Richard's Pens is right, the Cedar Blue was only used up till 1948, but the hoop style filler introduced in the 21 was first used in 51 Slenders in 1949. At some point in the later 1950s the vent hole was moved from the end of the barrel, to the side.

 

The pen in this set is probably the Midnight Blue that was used from 1948 to 1972. It has the hoop-style filler and the vent hole is in the end of the barrel. So I think this pen must be a 51 Slender dating between 1949 and 1956. I say '56 because I remember some reference on this site to a characteristic of the clip on this pen that places it before 1957. I have to confess that I don't remember what the specific detail was, but I do remember checking this pen and feeling sure that it met that criteria.

 

If anyone can fill me in on this clip detail, that'd be really appreciated.