For the Liege coin, a book I have also mention unknown mint. Very similar coins were issued by the Hasselt mint but nothing permits to tell if your coin has been minted in Hasselt or not. The Toledo obol you posted is very interessant.
I don't have any Islamic coins because it is too hard for ME to read the dates. Most have Arabic writing and very little in the way of any other design elements. Most of the European coins have a design element, a person or coat of arms. I had to set some limits for my collection. The focus of my collection is European coins with dates before 1501 AD. I hope you enjoy my posts as I get to them.
From the Mulheim mint. Seems to be well struck. Have you noticed that they use " IIII " instead of " IV " for the number "4"? Also " VIIII " instead of " IX ". I wonder when they started the shorter versions for those two numbers?
My comment on that particular coin was about the way they used Roman numerals. I found some coins in my collection that used the more modern way we use them today.
Probably some artistic license. The actual change date will be impossible to nail down, maybe space prompted. In your collection is probably the 1st example of abbreviation. Do you have any duplicates for sale? What great conversation pieces!
At this time I don't have any duplicates for sale. After Todd works his magic I will look again. The few times I've shown my coins by picture to non-collectors they politely look and ask only two questions, how old are they, how much is it worth?
I am guilty of asking those questions. I wish I had thought about collecting coins like yours 50+ years ago and we might be bidding on the same coins. Actually I did fantasize about having a collection of a.d. 1 to date but never did much toward finding the ones that weren't listed in a book. Now, all kinds of books on any subject exist and I'm too old to get into much new. My wife still lets me buy a neat coin once in a while. She would lower the boom on me starting a new collection. She wants me to be in dispose mode for a few years, which I need to be. It is difficult.
Man alive!!!!! Great thread/ stupendous coins, Tibor seems you can open a museum I was born in Julich/ some of your coins come from there. Here are some of my pre 1500 coins. Here are some Islamic examples (my col.) Fatimid Caliphs/ Egypt AV Dinar AH507 (1108AD) Misr Mint Al-Amir Abbasid Caliphs/ Egypt AV Dinar AH162 (763AD) Misr Mint Al- Mahdi Abbasid Caliphs/Syria AV Dinar AH308 (920AD) Damasqh Mint Abbasid Caliphs/Yemen AV Dinar AH320 (932AD) Al-Qadir Seljuks of Rum AV Dinar AH642 (1243AD) Konya Mint Ghiyath al-din Kaykhusraw