This rapid escalation of industrial action made re-launching strikingly different versions of their two flagship weekly comics - The Mighty World of Marvel and Super Spider-Man (whose final issue is shown below) - absolutely the worst time to be doing a re-branding, but it was too late and plans were too far advanced to change anything by then.
|Super Spider-Man #310 - the final glossy covered issue|
|Marvel Comic #330|
The covers of the comics reflected this period of turmoil, as shown here. After the first 'new-look' issues of both the renamed Marvel Comic (#330, cover dated: 2nd January 1979) and Spider-Man Comic (#311), from their second editions various combinations of issue numbers and/or cover dates began disappearing from the front covers during this period. Fortunately, the London Bullpen realised that there was nothing to stop them adding an issue number above the copyright notice along with the new editorial credits, so there is no difficulty in identifying the correct sequence of these affect issues.
|Spider-Man Comic #312 (undated)|
In the end publication of both comics, and the similarly afflicted Star Wars Weekly was halted for several weeks, with a five-week date skip between Spider-Man Comic #312 (31st January 1979) and #313 (7th March 1979), for instance, and a four-week jump between Star Wars Weekly #54 (14th February 1979) and #55 (14th March 1979).
This break in publication was never referred to in print and in the confusion was never apparent at the time. It's only when you take a look back across all three weeklies from this period that this time jump is revealed.
Fortunately, the strikes ended, and with a considerable sum of money already invested in their first new title that March, this time the debut of Hulk Comic would suffer no such disruptions.