I guessed Fede would post those, but they are an exception. I believe they were to go with the sale of Avro Lincolns to Argentina in 1948.
These would have been a special order as there was very little manufacture of .303 inch aircraft ammunition post war as there was so much on hand. In any case, the B4Z incendiary was long obsolete in British service by then.
As DocAV said, it was very unusual for Kynoch to use standard British military headstamps on contract ammo. They used a variety of different styles. Often they were as the customer required, as in this 1933 contract for 7.92mm for China with the stylised sun at 12 o’clock.
The most common style was “K (date) (calibre)” as illustrated by this 1930 6.5mm Mannlicher round.
Often, especially on 7.92mm contracts they used their generic commercial headstamp “KYNOCH 7.9 or 8m/m” with some modification to denote load. This example of a tracer has a red annulus and “G” overstamped at nine and three o’clock. Examples of this style are also known with “W” for AP and “B” for smoke tracer incendiary.
Sometimes the commercial headstamp was used simply with an annulus colour. This example has a blue annulus and when the bullet is pulled the weep hole of the phosphorous smoke tracer incebdiary bullet can be clearly seen.
Finally, during the 1920s and 30s Kynoch made large quantities of .303 inch aircraft ammunition for the many Vickers and Lewis guns still in service around the world. For these they continued to use the old WWI headstamps of "VIIG for tracer, “VIIW” for AP and “VIIB” for incendiary.
Returning to the main subject of this thread, the argument of Kynoch for Greece or the other way round has been discussed several times before here.
I maintain that Kynoch had nothing to do with it, the order was direct from the Ministry of Supply to PCH, as demonstrated below.
Many of the statements made about ammo are based on secondary sources, either from other collectors or articles in gun magazines, etc. Much is of course correct, some is slightly erroneous and some downright wrong. Good research requires a degree of academic rigour and there is no substitute for going back to primary written sources.
In this case it is the order ledgers of the Ministry of Supply held in the British National Archives in files NA:SUPP 4/141 and 142. These show that contract 294/C/6271 was placed on 29 March 1940 with PCH for 169,195,000 7.92mm BESA Ball Mark Iz. A further order was placed with PCH in August 1940. I have not traced the order for AP rounds.
Further documentation proof can be found in the lists of supplier codes allocated by the ministry. (Note that these are for suppliers, not customers). PCH is clearly shown as being the supplier code for Pouderies et Cartoucheries Helleniques.
In the same time frame as the PCH order, further 7.92mm orders were placed for ball and tracer in India (but later cancelled). The probable reason for these orders were the production problems experienced by Kynoch in the previous two years. When the Czech ZB53 was adopted as the BESA Kynoch were appointed primary ammunition supplier but it was found that their cases were too hard and separated cases occurred. This was corrected by 1939 but these orders were probably a precaution against having a weapon in service with a possible ammunition problem.
Finally, there is no similarity whatsoever between the headstamps of the Ball Mark Iz made by Kynoch in 1939 and the PCH Mark Iz made in 1940.
Incidentally, at the same time we bought 2,000,400 8mm Lebel rounds from PCH under contract 294/C/9718. These were probably fro French weapons brought back from the Dunkirk evacuation and issued to UK forces as an emergency option.
Sorry for such a long post,