Alwin

HADRIANUS, Sestertius
Rome, 136
S 3572 v. - C 110 - RIC 838
HADRIANVS AVG COS III PP, Bare head right
AEGYPTOS, Aegyptus reclining left on cista filled with grain ears, holding sistrum. Ibis standing at feet.

Next: Another Hadrianus bare head

ARCADIUS, Siliqua
TRPS Treveri, 392-395

Next: Siliqua of Honorius
 

Sorry, I hadn't really integrated the "online". I understand all the possibilities you mention. But I also see the downsides. The question is: do you prefer to be the only one to manage your personal data or are you ready to let them wander outside?

Excel and Word are not suitable for this use, and very quickly limited when you want something a little elaborate. A database, because that's what it is, is done with Access. It is certainly much longer and more complicated to implement, but the result is infinitely better. Better visually, and above all better for the ease of reaching each coin of the database.
Below, an example of what we can have for each coin (among other possibilities, very numerous).

SEPTIMIUS SEVERUS
Denarius
Rome, 200-201
3.29 g - 19 mm
S 6323 v. - C 370 - RIC 176
SEVERVS PIVS AVG, laureate head right
PART MAX PM TR P VIIII, trophy between two captives

Next: Another PART MAX

FAUSTINA Junior
SESTERTIUS
Rome, 175-176
25.45 g - 34 mm
S 5227 - C 69 - RIC 1702
DIVA FAVSTINA PIA, Bust right
CONSECRATIO,  Faustina holding sceptre, seated on peacock flying right  S C

Next: Sestertius Crispina

ARDASHIR I, Tetradrachm
Ctesiphon
13.43 g - 26 mm
Göbl II/5/2

Next: Shapur I -- - - --> Shapur II

TREBONIANUS GALLUS, Tetradrachm
Antioch, 251
11.21 g - 25 mm
Prieur 681
AYTOK K Γ OYIB TPЄB ΓAΛΛOC CЄB, Laureate bust right, Z
ΔHMAPX ЄΞOYCIAC YΠATO B, Eagle facing, head left, Z, SC

Next: Hostilian

EDIT: 2 mn too late

2 hours ago, Parthicus said:

... some later coins were struck locally which imitated both the original under type and the "countermark", with the countermark already carved into the obverse die!

Indo-Parthian (late 1st century BC - early 1st century AD)
Drachm - 2.88 g - 18 mm
Sellwood 91.13 - Senior 199.2D
Diademed bust of Phraates IV left (imitation); eagle at right; pseudo-countermark (helmeted bust right).
Archer seated right on throne; corrupted legend.

There are of course better preserved exemples ; I acquired this drachm for the quality of the countermark.
If you wish, you can find the different countermarks of this coinage here:
http://www.parthika.fr/Contremarques.html

These days :
Deceptive photos of coins in general. For exemple: dead-cleaned coins that seem to have a nice patina, scratches or other defects largely "erased" on the image, deceptive images that round off coins that are not...

MAXIMIANUS (first reign: 286-305)
Antoninianus, Lyon, 287-289
IMP C MAXIMIANVS P AVG, Radiate, helmeted, and cuirassed bust right.
VIRTVTI AVGG,  Victory standing right on club, crowning Hercules standing right, wrestling Nemean Lion.

Next: Another of the 12

5 hours ago, Prieure de Sion said:

And thanks for the link - I will download and read it.

I failed to mention that I do not share all the conclusions drawn in this article!

The main point has been said above. The most important is to find the correct Sellwood number, when it exists, and therefore as much as possible the correct period of issue of the coin. If you see Artaban II, III or IV for the same coin, it is not necessarily a mistake, it is simply that the seller (or the author of the publication) is not using the same specialist reference. These differences are here: http://www.parthika.fr/Chronologie.html
As I assume you are a German speaker, you will find many answers to these questions in this article:
https://www.academia.edu/38903221/Hauser_2016_Münzen_Medien_und_der_Aufbau_des_Arsakidenreiches?email_work_card=title

I also noticed this fake S.80 when the sale went live, but with a few exceptions I no longer report fakes to sellers, too many of them knowingly leave fakes in their sales.
Below is a sixth example of the Walker 7 fake:

I have never seen the Walker 8 fake, from a second pair of dies,  in auctions, or they have escaped me.

Another fake S.80 circulates widely. It is easy to identify (collar with a single line and on the reverse the archer's seat is materialized).

Cast fakes are also often present (rather on FleeB), but they are so coarse that they are not dangerous.

CNAEUS POMPEY, As
Spain, 46-45 B.C.
S 1386 - Cr 471/1 - RPC 486
Laureate head of Janus . I above
Prow of galley right . CN.MAG (IMP)

The only Sasanian coin still in my possession:

ARDASHIR I (224-242)
TETRADRACHM, Ctesiphon
13.43 g - 26 mm
Göbl II/5/2
Bust of king right, wearing tiara.
Fire altar.

Thank you all for your welcome and for sharing your Parthian coins, I don't see them often enough!

6 hours ago, Parthicus said:

 And how about a nice tetradrachm:

😍😍😍

Very nice Mithradates II.

S.27.2

My friend Qcumbor gave me the reasons why this new forum was born, and I join you today. My level in English hasn't really improved in the last two years, so I will continue to write very little and will only be able to read the shortest and/or the most illustrated subjects. My core collection remains the Parthian coinage, but that won't prevent me from taking an interest in about every post. I greatly appreciate this community of ancient coins enthusiasts, I hope it will live for a very long time!

To start well, of course a Parthian coin:

ARTABANOS III (10-38) - Drachm S.63.10 

Suse - 3.04 g - 19.5 mm

Diademed bust left; on the left a star.

Corrupted legend; Arsaces seated right, a palm behind him.

This coin is not impressive, but it is the only one example of this type I have ever seen.