* U.S.-China commerce jitters weigh on sentiment * Mexican peso, Peruvian sol dip * Brazil actual companies after 5 day slide to document low (Updates costs, provides information objects) By Medha Singh and Shreyashi Sanyal Nov 19 (Reuters) - Most Latin American currencies have been decrease on Tuesday as lack of readability on U.S.-China commerce developments stored buyers on the sidelines however Brazil's actual bounced off all time lows. The actual firmed about 0.5% after the foreign money crossed a key mark at 4.20 to the greenback to hit a document low within the earlier session when there was no central financial institution intervention. Central financial institution chief Roberto Campos Neto mentioned on Tuesday the trade charge was not fueling inflation or inflation expectations, indicating policymakers have been comparatively relaxed and that intervention was not imminent. The financial institution was as a result of promote as much as $600 million by way of reverse foreign money swaps on Tuesday, however later canceled the public sale forward of a market vacation on Wednesday. "From a purely basic perspective, the actual is undervalued for the time being, however the important thing factor is that it rose above 4.20," mentioned Christian Lawrence, senior market strategist, LatAm FX at Rabobank in New York. Debate across the central financial institution's FX intervention coverage has intensified because it offered {dollars} within the spot market in August for the primary time in over...