... I did not know there were coins with maps on them. Fascinating. ...
But highly speculative, today many scholars do not believe in this theory (and I follow them

).
For example
Kai Brodersen, "The presentation of geographical knowledge for travel and transport in the
Roman world: itineraria non tantum adnotata sed etiam picta", in: C. Adams and R. Laurence (eds), "Travel and
Geography in the
Roman Empire",
London /
New York 2001, pp. 7-21:
"However, the pattern changes significantly from die to die (which would be rather problematic if this really were a map to
scale), and the details are indeed far too ‘rough’ to allow any interpretation of this kind."
https://vdocuments.site/travel-and-geography-in-the-roman-empire-5880c1125853e.htmlJarosław Artur Bodzek, "A New
Achaemenid Coin. Several Comments on a Unique
Tetradrachm of the
Type “Great King/Prow” and Some Other Issues of the Satraps", Notae Numismaticae-Zapiski Numizmatyczne
XII, 2017, pp. 33-50:
"In my opinion, the most plausible hypothesis would assume a conscious reference to the
reverse of the silver sigloi, just as in the case of the
obverse imagery."
https://www.academia.edu/36605397/_A_New_Achaemenid_Coin_Several_Comments_on_a_Unique_Tetradrachm_of_the_Type_Great_King_Prow_and_Some_Other_Issues_of_the_Satraps_Notae_Numismaticae_Zapiski_Numizmatyczne_XII_2017_pp_33_50Axel Frejman, "Some thoughts on
ancient maps, travel, and the location of Greek rural sanctuaries", in K. Höghammar, M. Livadiotti (edited by), Sacred and civic spaces in the Greek poleis world, Uppsala seminars, 15-16 February 2017, Thiasos 7.2, 2018, pp. 101-110:
"Whatever the image represents, I find it unlikely to be a representation of roughly 20,000 km2 of mountainous landscape."
http://www.thiasos.eu/wp-content/uploads/2018/03/04-2018-Frejman1.pdfRegards
Altamura