Have found this.
Block 3/G, Third Gloster Produced Block
Serial Range V6533 - V6582 (50) Mk. I, V6600 - V6649 (50) Mk. I, V6665 - V6704 (40) Mk. I, V6722 - V6761 (40)
Mk. I, V6776 - V6825 (50) Mk. I, V6840 - V6889 (50) Mk. I, V6913 - V6962 (50) Mk. I, V6979 - V7028 (50) Mk. I,
V7042 - V7081 (40) Mk. I, V7099 - V7138 (40) Mk. I, V7156 - V7195 (40) Mk. I, W9110 - W9159 (50) Mk. I, W9170 -
W9209 (40) Mk. I, W9215 - W9244 (30) Mk. I, W9260 - W9279 (20) Mk. I, W9290 - W9329 (40) Mk. I, W9340 -
W9359 (20) Mk. I, Z4022 - Z4071 (50) Mk. I, Z4085 - Z4119 (35) Mk. I, Z4161 - Z4205 (45) Mk. I, Z4223 - Z4272 (50)
Mk. I, Z4308 - Z4327 (20) Mk. I, Z4347 - Z4391 (45) Mk. I, Z4415 - Z4434 (20) Mk. I, Z4482 - Z4516 (35) Mk. I,
Z4532 - Z4581 (50) Mk. I, Z4603 - Z4652 (50) Mk. I, Z4686 - Z4720 (35) Mk. I, Z4760 - Z4809 (50) Mk. I, Z4832 -
Z4876 (45) Mk. I, Z4920 - Z4939 (20) Mk. I, Z4940 - Z4969 (30) Mk. IIA, Z4987 - Z4989 (3) Mk. IIA, Z4990 - Z5006
(17) Mk. IIB, Z5038 - Z5087 (50) Mk. IIB, Z5117 - Z5161 (45) Mk. IIB, Z5202 - Z5236 (35) Mk. IIB, Z5252 - Z5271
(20) Mk. IIB, Z5302 - Z5351 (50) Mk. IIB, Z5376 - Z5395 (20) Mk. IIB, Z5434 - Z5483 (50) Mk. IIB, Z5529 - Z5563
(35) Mk. IIB, Z5580 - Z5629 (50) Mk. IIB, Z5649 - Z5693 (45) Mk. IIB - Total 1,700
Third production batch of 1,700 aircraft built by Gloster Aircraft Co, to contract 85730/40/23a. Powered by Rolls-Royce Merlin III or Rolls-Royce Merlin XX engines, driving Rotol or De-Havilland three blade variable
pitch propellers. Aircraft delivered between July 1940 and August 1941, average rate of production 4-5 aircraft per day.