indentifying couple of Roman(?) coins

From my grandad's coin tin, just seeing if they are rare or not. Thanks to anyone that can help.

 Pictures cropped 

1  

2  

 Coin 1 is similar - N#104819 

IMP C CONSTANTINVS PF AVG // SOLI INVICTO COMITI 

 Coin 2 is GALLIENUS lettering maybe. 

Hi coin 2 looks like this Gallienus N#288846  SOLI CONS AVG

Best 

Hub

 Looks like more than SOLI before CONS AVG and also still 

not sure what the image represents. Maybe this or similar 

N#288612 

GALLIENVS AVG // APOLLINI CONS AVG 

ZacUK

 Looks like more than SOLI before CONS AVG and also still 

not sure what the image represents. Maybe this or similar 

N#288612 

GALLIENVS AVG // APOLLINI CONS AVG 

 

 

It definitly looks very similiar too that design, I dont think this one is silver though? I know nothing about Roman coins though.

 I just chose that as an example - there is also this 

N#288611 

which also says silver, but does not look like it. 

 Could be a few others, but not on here yet. 

 So the mystery image is a Centaur walking to the right, with a bow and arrow. 

ZacUK

 I just chose that as an example - there is also this 

N#288611 

which also says silver, but does not look like it. 

 Could be a few others, but not on here yet. 

 

 

 So the mystery image is a Centaur walking to the right, with a bow and arrow. 

Interesting, Thanks so much for your help mate, will probably end up selling them, and will use these to as possible references. Any idea what they might be worth? I'm guessing It's hard to tell from a few pictures but any estimate from you're experience will be great appreciated. Cheers 

 Not from me - I know nothing of these coins, including for valuations, 

just attempting identification, nothing more. I do not collect them. 

 ‘View sale offers’ - that is a link shown at the end of each page, 

and also pictures with prices below them - so have a look at those 

two links I gave, maybe they could be useful. Then again offered 

price is not the same as actual value of course. Also maybe 

other members might know and reply.