Layer Estimates:

Layer: Copernican Cities (ID:0)
Count: 12
Extent:

XMin: 1233476.2156
YMin: 5142301.8024
XMax: 2277720.8226
YMax: 7240590.6184
Spatial Reference: 102100 (3857)

Layer: Central Europe A.D. 1500 (ID:1)
Count: 92
Extent:

XMin: -1057570.4218
YMin: 4153614.4726
XMax: 4609995.3115
YMax: 10769330.0954
Spatial Reference: 102100 (3857)

Layer: CentralEurope_1500_old (ID:2)
Count: 103
Extent:

XMin: -533842.999899998
YMin: 4303406.1445
XMax: 4609995.3115
YMax: 7916841.9016
Spatial Reference: 102100 (3857)