Are All These Dennison Hinges?

Is it possible to determine if a hinge is Dennison just by looking at it? I bought these from a dealer who claimed they were Dennison. Obviously, the package was opened. I just saw the "regular" ones that I have always recognized as Dennison. Got home and found the others. But then I got to wondering if, over time, they made more than one type.

Excellent question - I look forward to the replies!

The only one I would be fairly certain of is the first one.

The one on the right looks like an early Dennison.

The one in the center is the one I'm not sure of...there is one quick way to tell: try it! If it peels easily then it doesn't matter if it is Dennison or not...the original reason for buying them is to get something easily peelable, right?

I like it, Buck49! I will report back in a couple days.

The one in the center looks like the old H.E.Harris hinge ,they came in a packet of 1250 hinges in a large pack ,I believe it had a airplane on the package.

For what its worth.........
I've used only Dennisons over the last year in my ww albums. I found that there is a "waiting period" before you can easily peel off the stamp/hinge. Trying to do so within a few hours doesn't work well. Waiting a day or so is much better.

Is that because it peels better once it is completely dry?

Yes, from what I can tell anyway. Perhaps it even gets better with age..........

From my experience that is true. Two days may be better than one. I can't tell that it gets much better with more than two. That's enough to tell how peelable it is, anyway.

Stick a couple on a sheet of paper over some printing. The printing will tell you if it peels off without disturbing the surface of the paper or not. Warning: If you have an ink jet computer printer, expect to lose a little more than when peeling a stamp off an album...ink jet ink is abnormally soft. If you can live with that much damage (shouldn't be much) you will find less on stamps/albums.

Got an extra album page? Try that. You might even stick on some worthless stamps for the test.

I agree with Mike33; the 3rd is certainly early Dennison and is confirmed by his illustration. The 1st is probably later Dennison and the 2nd is probably not Dennison.

Donald

I used these three hinges and a fourth, Prinz, in a very simple test. Stuck four of the same stamp to an old album page (for a solid 72 hrs), onto preprinted illustrations. The results, in order of the picture with Prinz being fourth, were:
1 - stamp fell off the hinge when I just touched it; may have used too little moisture; peeled off the page easily and clean with barely no adhesive residue on the page nor the stamp
2 - stamp was held firm to the page and the hinge peeled cleanly off the page and stamp; very little adhesive residue on either
3 - stamp was held in place more firm than #1, but rest was same as #1
4 - hinge peeled off stamp, but tore a thin on the album page; could plainly see adhesive residue on stamp
For moisture, I gave each a slight touch to my tongue. I wonder if there is any difference in using saliva vs. tap water vs. distilled. I doubt it.

One thing we haven't mentioned (that I saw).......... Some hinges can be removed quite nicely from both the album and the stamp. But in my experience, there are many that adhere to the album, but come off the stamp fairly easy. Of course there are some that don't come off easily from stamp or album.

I assume its about the adhesive used, but also about the type of paper of both stamp and album page. It appears that the glossier (word?) the page, the easier for the removal of the hinge..................