Now look here, this bicycle box truly represents classic Finnish design! Ugly, heavy, indestructible, and slightly awkward to use, your bike pump (and other tidbits) will be more secure here than in a safe.
Dimensions 4 x 5,5 x 42 cm, weight modest 800 grams. Attaches to the frame with metal loops and nuts, very simple. Max. frame diameter about 2,9 cm with the included attachment thingies. The nuts are tightened with an 8 mm spanner. In short; this should fit all old-timey style bikes, be it modern or the real thing, or anything else that has classic 1 1/8" tubing. Please keep in mind, you can fit this anywhere you like - the pictures are merely suggestions.
You remove the lid by first unscrewing the screw (!) and then sliding the lid off. However, they might have been onto something, as there are a couple of holes that probably could be used with an alternative locking mechanism. You can simply change the screw to a winged model for easier operation.
Used but in perfectly serviceable shape. A very nice accessory for an older bike!