Hello
I have found this pen, made out of black hard rubber, with a warranted 18K gold nib. The imprint says: Jumbo pen made in Japan. The filling mechanism is a sort of plunger, but not working. Obviously a pen from the 30ies. Very thick but not very long, only about 4 inches closed.
Has anybody more informations about this pen, also about the value? It is not mine yet.
Have a good time
Christian

Look at the post dated August 1,2007 by Bibliophage and here:
http://www.fountainpennetwork.com/forum/in...showtopic=37190
Plus some of the major posters on this forum may have helpful insights.

You'll probably find that the filling mechanism is a japanese eyedropper, the plunger part of the pen is an ink shut off valve, screw it closed and no ink can escape (no leaks), screw it open and ink flows so you can write.

Yes, it's a Jumbo (Jumbo is the generic model name, not specifically a brand) pen - an ebonite eyedropper, coated with urushi and made for those who have trouble gripping normal pens. They range in quality... some may have nicer rolled gold trim (it would be stamped R14K or similar), or otherwise just standard gold plating. The 18K nib is a good sign, if it is original to the pen.

Jumbo pens are still made today, with Platinum and Sailor both offering them... they are quirky things, but cool to have in a collection.

They are easy enough to find... so they are not particularly valuable - unless from a well-known maker or perhaps with some quality maki-e work - so I'd guess about $100 on average...? (Stan may have a better idea on pricing.)

Hi.

The best way to date your pen is to look at the feed. If it is smooth, most likely it is pre-war. If it is serrated, then post-war. Most of the 'Jumbo' pens i've seen were made in the 1950s, often as souvenirs. They're often found with plated nibs. some have a screen printed hiramakie design. Some time ago, I saw one with a touristy image and name of Niagara Falls on the pen, so that gives you an idea of how they get around.

That your pen has an 18K nib leads me to believe it is post-war as almost all pre-war Japanese pens are 14K. Many were coated wth urushi as a protectorant as was yours. Usually it was a thin coat that easily chipped or wore off. I cannot tell from your pictures if your pen is experiencing this distress.

Most were eyedroppers. I think I've seen one or two lever fillers. Unfortunately, the seals dry out and will need to be replaced if you want to restore the pen. You can also use an 'O' ring around the blind cap if this doesn't bother. the repair is inexpensive but, might be pricey in relation to the value of the pen.

Laura mentioned a value of $100, which I find generous. They go for much less in Japan. I guess that owing to scarcity they might go for more in America. Some have attributed values in excess of $100 based on sales at eBay. But, we know how that goes. Get two crazies together and the price skyrockets. Besides, most westerners haven't a clue of what is available in Japan. My guess on the value is about $50 and much of this is due to the nib.

As I write I am holding a 'Jumbo' pen from the early 1930s and it has the biggest 14K nib I've seem. Makes my wedding band seem tiny. I save it because it has an interesting inscription, the oxidized coloration is unique (think wabi sabi), and it works writing a slick flex line.

Regards.

stan