Yes, they are from model box art and I have identified some the kits some of the art came from.
1. Trumpeter KV model 1939
5. Dragon marder IIIH Ausf. G
6. Dragon Sig IB
8. Dragon M26a1
9. Dragon M4 Preist Mid production
10. AER T-18
13. Dragon Panzer IVG (f2)
18. Hobbyboss Panzer IC
22. Tasca m4a3e2
24. Dragon Panzer I ausf.a DAK
37. Revell Luchs
44. Techmod T50
45. Tamiya T34 CHTZ
49. SKIF T55A
51. boxart from a Dragon kit but forget what the tank is called
52. SKIF BMP3
55. CMK Panzer 35(t)
58. Dragon Brumbar mid production
62. Dragon M4a2 "Red Army"
64. Hobbyboss Merkava mk.IV
65. Roden Rolls Royce armored car
69. Dragon Panzer IV Asuf.G LAH divison Kharkov 1943
70. Hobbyboss White scout car late production
73. Italeri L6/40
74. Hobbyboss Landwasserschlepper
78. Zvevda KV2
87. Dragon vk4502(P)H
103. Tamiya T34/85
107. Italeri Jagdpanther
108. Draon Panzer IV Ausf. D w/7.5L48
113. Trumpeter United Arab Emirates BMP3
122. Dragon Panzer Iv Ausf J "last production"
123. Italeri Carro Armato P.40
126. Dragon El Alamein Sherman
129. Dragon Type2 Ki Mi
133. Zvesda KV1
136. Zvesda T34/76 model 1940
138. Dragon Landwasserschlepper Prototype No. 1
143. Miniart SU76M
147. Dragon Panzer Iv Ausf. D