This could be a mistake.
Schön says 1377/1958 too.
Schön# A94 (KM# 396)
VF 50€
XF 100€
4.9 Grams
The year is wrong and the text in comments field is wrong (1958 - 1378 instead of 1958 - 1377)
You should make a change request. And if you do so, please add the weight and the Schön#.
I don't have this coin, but in my list is written a diameter of 23.0 mm. I don't know where i know this from.
The "sister" of this coin is
https://en.numista.com/catalogue/pieces5963.html
The funny thing is, Schön only counts the 1958/1377 coin of this type as Schön#B94 and the 1960/1380 and 1966/1386 as Schön#102. (KM# for both is 395)
Schön says about the value of the
Schön# B94 (1958/1377)
VF: 50€
XF: 100€
(like the Schön# A94)
For the Schön# 102 (1960/1380, 1966/1386)
XF: 1,50€
UNC: 3€
Both coins are listed with 4.9 grams.
My wife has a 1960/1380 coin (KM# 395, Schön# 102) and i measured a weight of 4.9 grams, a diameter of 23.0 mm and a thickness of 1.7 mm.
What exactly is the difference between Schön# B94 and Schön# 102 i can not see.
The parameters might be the same for the KM#386, because the KM#381 (Schön# 83.2) my wife has, has the same parameters and the KM# 380 (Schön# 83.1) has the same weight and diameter (thickness unknown, because my wife does't have this coin).
If anybody has a KM# 396 and/or a KM#395 1958/1377 and/or a KM# 395 1960/1380 or 1966/1386, please tell us all you can tell about these coins.
What does our Africa Expert Dito know about this?