Turkish Coin Classification Dataset (TCDL) This dataset was constructed to support object classification and instance segmentation research on Turkish coins. The raw collection consists of 684 original images captured using 3 different devices, featuring single, multiple, and overlapping coins placed on colorful, patterned, and irregular backgrounds. All coin instances were annotated in COCO format, yielding 3,550 annotations across 8 categories: 1 Kuruş, 5 Kuruş, 10 Kuruş, 25 Kuruş, 50 Kuruş, 1 Lira, 5 Lira, and Yabancı (foreign coin). In addition, 1,567 negative (background-only) samples ranging from 200 to 500 pixels were included to reduce false positive detections during inference. Dataset Summary Split Images Annotations Original (coins) 684 3,550 Original (background) 1,567 0 Total 2,251 3,550 Class Distribution Class Count 10 Kuruş 511 1 Kuruş 363 1 Lira 509 25 Kuruş 474 50 Kuruş 438 5 Kuruş 416 5 Lira 456 Yabancı 383 The GitHub Link for the Graphical User Interface (GUI) used in the related to the article and this dataset: https://github.com/bbergsarr/Turkish_Lira_Coin_Counter_GUI If you use this dataset in your research, please cite. For more information, please contact: www.linkedin.com/in/bertugcag www.linkedin.com/in/buğra-berk-sarıoğlu www.linkedin.com/in/gkgultekin