[QUOTE=Air Histerical;2355986]This form of numbering appears on a couple of others I’ve found – BV978 “30-13 (42-64074)” and KH228 “36-20”.

Hi, Lee.

Slight correction on one of your serials. 30-13 is BZ978.

Graham nailed it in his explanation. The known numbers for the Modification Centers (located in the US, so they were Centers, not Centres) are few and far between, and there is no direct relationship between MCns and serial numbers. For example, from the Oughton book, KG967 is MCn 30-358, but 12 serials later the next know MCn, for KG979, is 34-14, not 30-370. Another example: KG935 is MCn 29-192, but 14 serials later the next known MCn, for KG949, is 36-4, not 29-206.

From my familiarity with Liberator photos and activities, I might be able to match up a photo showing an MCn to a serial number not known from the photo. If you’re willing to send me a photo as a test, please do. Contact me via private message.

The Oughton book, unfortunately, has tons of errors (and a massive amount of excellent info).

Cheers,

Matt