3 Grill Stamps - Request For An Opinion

All 3 stamps have had a hard life.

90 cent - poorly centered, creased, thinned.
15 cent - top right corner added or repaired, thinned.
24 cent - poorly centered, possibly reperfed at bottom, both top corners repaired.

Regarding the grills, though only close inspection can validate, I don't see any red flags on the first two stamps (putting aside the damage pointed out). They are probably legit H grills. But the 24c is not right. It might be a double grill, but that doesn't seem likely either. The grilled 24c should be an F grill with 12 or 13 columns. That stamp has way too many columns - so I'd guess it might be a fake grill.

On the 24c I count 12or13 x 16 points. That is in range, but that merely means that a MUCH better image is necessary to be sure of anything. The stamp does have some problems, but not enough to despise a genuine grill if it has one. If my count of the points is correct, you should probably send it to APEX or even the PF for an opinion. Not sure who to recommend for someone in Europe.

Regarding the H-grill candidates, you might send them in too. I don't think the 15c has a corner repair, but it does have a crease with broken fibers.

essayk, I think you are right, because of the angle the photo is taken at it looks like the stamp is on its side. But I see from the "25" it is just upside down. So, yes, it could be a legit grill.

I tried to take some better pictures. I was very interested in your exchange of opinions.

I don't think there's much to add. Two H grills and an F grill most likely. All three are high catalog value stamps but due to the faults - as described by Germania - will have values substantially below that.

Hi sopotsopot

I dont want to interfere with experts replying to you, but some times I use one of my image manipulation software to see it better..You probably dont need this post..But just for your information

Robert

Thank you all very much for your help. I am impressed with your knowledge and willingness to help