Vintage Angenieux lenses with/without HEC coating matching?

[Jannik Tesch]

Dear community,
dear Angenieux experts!

I got a set of four vintage Angenieux lenses which all match very well.
I learned that there are newer, better coated HEC versions of two of the four lenses.
I plan to convert my set to PL, but now I think of investing in the better HEC versions before I do the conversion. But I am afraid that the two HEC lenses will not match as well with the non-coated lenses, from which there are no HEC versions. These are the lenses:

Angenieux Type R7 5.9mm T2
Angenieux Type 6x9.5 T1.9 (T1.8 HEC version available)
Angenieux Type 10x12 T2.5 (T2.3 and T2.1 HEC versions available)
Angenieux Type 20x12 T4.2

What do you think?
Also if you have any information/sources on the different versions, I would be really thankful if you share them – it’s so hard to find anything.
The best thing would be a list with serial numbers and years/versions.

Thanks in advance,
Jannik

[Jannik Tesch]

Source: http://camera-wiki.org/wiki/Angénieux_serial_numbers

1935-1941	up to 15000
1942	~15000
1943	~25000
1944	~40000
1945	~50000
1946	~65000
1947	~95000
1948	~120000
1949	~150000
1950	~175000
1951	188190
1952	205144
1953	252953
1954	333942
1955	374494
1956	422225
1957	457710
1958	489029
1959	656782
1960	772739
1961	892237
1962	983620
1963	1048806
1964	1089651
1965	1133553
1966	1165206
1967	1197971
1968	1218594
1969	1243618
1970	1276691
1971	1303945
1972	1363733
1973	1374029
1974	1388527
1975	1407046
1976	1425572
1977	1436738
1978	1445937
1979	1451571
1980	1460230
1981	1468987
1982	1473032
1983	1476845
1984	1484276
1985	1504607
1986	1517838
1987	1524014
1994	~1548700