Some information on line suggests it might be a UK issue. However, other sources suggest that it might be a Danish label from the mid 1960s. Finally, as mentioned below, it might be a Boris Rose issue.
Here's a copy of the label, which doesn't provide any help
Here's a not very helpful picture showing the record cover as well:
I searched for similar catalog numbers and found a few, including this for M-554:
Here's Temple M-551:
And Temple M-552:
The following page mentions that the label was associated with Boris Rose: http://www.depanorama.net/dems/02dems2b.htm
Here's the cover of Temple M-550:
So, that covers M-550, M-551, M-552, M-554, and M-555. What about M-553?
All I can find is this item, but it's a completely unrelated 78 reissue label:
Perhaps this should be moved to discography.